JP6451445B2 - Embedded ceiling air conditioner - Google Patents

Description

  The present invention relates to a ceiling-embedded air conditioner in which a main unit is embedded in a ceiling, and more particularly to a structure of a bearing portion that pivotally supports a wind direction plate.

  In a ceiling-embedded air conditioner, a box-shaped main unit including a heat exchanger and a blower fan (turbo fan) is embedded in the ceiling, and sucked from a suction grill on a decorative panel attached to the bottom of the main unit. 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.

  The ceiling-embedded air conditioner of the conventional example supports the wind direction plate by attaching the movable shaft of the wind direction plate to the support hole provided in the wall on the blower outlet side of the decorative panel (air conditioner body) with the air outlet opened. Then, air was blown out in one direction by rotating the wind direction plate up and down. (See Patent Document 1)

JP 2003-240258 A

  In the conventional example, air is blown out in one direction along the opening of the outlet, but the room temperature in the air-conditioned room is not uniform because it is not blown out toward the corner portion of the decorative panel.

  In addition, on the wall surface of the decorative panel provided with support holes, since there is a temperature difference between the wall surface on the air outlet side through which air flows and the wall surface on the main body side that contacts the back surface, condensation occurs. There was a need.

  The present invention solves the above-described problems, and provides a ceiling-embedded air conditioner that can blow the blown air in all directions and that does not generate a temperature difference on the wall surface that supports the wind direction plate. For the purpose.

In order to solve the above-described problems, the present invention includes a box-shaped main body unit that is embedded in a ceiling of an air-conditioning room and includes a blower fan and a heat exchanger that surrounds the blower fan, and is attached to a lower surface of the main body unit. In the ceiling-embedded air conditioner having a rectangular decorative panel covering the ceiling,
The decorative panel is formed by a frame-shaped outer frame portion, a frame-shaped inner frame portion disposed inside the outer frame portion, and a connection portion that connects the outer frame portion and the inner frame portion at corners. The space between the outer frame portion and the inner frame portion serves as a blowout passage, and an opening between the connecting portions adjacent in the blowout passage serves as a blowout port, along the square sides of the decorative panel. The blowout passage is covered with a wind direction plate that is longer than the long side of the blowout port, and the wind direction plate has a wind direction portion that faces the blowout port, and an auxiliary wind direction portion that faces the blowout passage at the end of the wind direction portion. And when the wind direction plate rotates and the inner frame portion side of the wind direction plate moves into the blowout passage, the auxiliary wind direction portion and the connection portion of the wind direction plate form a corner corner blowout portion. and, wherein the wind direction plate is provided with a shaft portion, the connecting uprights for the plate-shaped bearing is erected, the column forming the bearing of the shaft portion to the distal end Provided with a shaft hole for supporting and providing a vent between the connecting part and the shaft hole.

  The ceiling-embedded air conditioner of the present invention configured as described above can be blown in all directions by providing the decorative panel with a wind direction plate and a blowing passage longer than the long side of the outlet. In addition, a plate-like bearing support column is erected at the connection portion of the decorative panel, and the bearing support column has a shaft hole that supports the shaft portion of the wind direction plate at the tip, and a vent hole between the shaft hole and the connection portion. By providing the above, it is possible to reduce the bearing struts from becoming resistance to ventilation and to blow out a lot of air. Furthermore, it is possible to prevent dew condensation occurring on both surfaces of the bearing post, and a heat insulating member is not required for the bearing post.

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 the front view which expanded the corner | angular part of the decorative panel. It is a perspective view of a motor cover. It is explanatory drawing of the support | pillar for bearings with EE sectional drawing of FIG. It is explanatory drawing at the time of rotation of the wind direction board of a ceiling embedded type air conditioner. It is explanatory drawing which shows the direction through which blowing air flows.

  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.

  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 is the same as the box-type main unit 10 embedded in the ceiling T in the air-conditioning room K. A rectangular decorative panel 3 attached to the bottom surface 101 of the main unit.

  The main unit 10 includes a top plate 13 formed of a sheet metal having a substantially octagonal shape with four sides of a square as a long side and four sides of the square chamfered as a short side, and an outer periphery of the top plate 13. An outer shell is formed with the side plate 11 extending downward from the side plate. In the side plate 11, the mounting bracket 12 having a hanging portion 121 and a fixing portion 122 that are bent outward is fixed to four locations of the side plate 11 a located along the short side of the top plate 13. The main unit 10 is installed on the ceiling T by suspending the suspended portion 121 with a plurality of suspension bolts embedded in a ceiling wall surface (not shown).

  In the main unit 10 in FIG. 2, the following description will be made with the top plate 13 direction as the upper surface or upper direction and the air-conditioned room K direction as the lower surface or lower direction. The same applies to each part.

  A heat insulating member 14 is provided on the inner peripheral surface of the top plate 13 and the side plate 11 of the main unit 10 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 lower part of the main unit 10 is covered with a drain pan 60. 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 air W in the air-conditioned room is sucked into the main unit 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 main unit 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. A drain pan 60 that receives the lower part of the heat exchanger 25 is composed of a heat insulating member 61 and a drain sheet 62. A resin drain sheet 62 is formed integrally with the foamed heat insulating member 61 on the surface facing the heat exchanger 25 to receive drain water generated by the heat exchanger 25. 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.

  Four main body outlets 15 between the heat exchanger 25 and the heat insulating member 14 on the inner peripheral surface of the side plate 11 and along each of the four sides of the main body unit 10 provided in the drain pan 60 were blown out from the blower fan 23. It becomes the ventilation path 17 which guides the air W 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 into the air-conditioned room K from an outlet 31 described later.

  In the present invention, the blowout passage 32 and the wind direction plate 4 which will be described later can be blown out in all directions without providing auxiliary blowouts at the four corners of the main unit 10 and the decorative panel 3. Inside, rectifying plates 191 and 192 for guiding the air W to the four corners are provided. As shown in FIG. 2, FIG. 3, and FIG. 13, the rectifying plates 191, 192 are provided with curved surfaces that extend outward in the longitudinal direction of the main body outlet 15 so as to face two locations in the main body outlet 15. The rectifying plate 191 sends air in the direction of a bearing column 351 standing on the decorative panel main body 30 described later, and the rectifying plate 192 sends air in the direction of a motor cover 44 fixed later on the decorative panel main body 30. It is. Since there is no air resistance in the bearing column 351 direction, the rectifying plate 191 is formed in a tight arc shape so as to guide a large amount of wind toward the bearing column 351. On the other hand, in the direction of the motor cover 44, the motor cover 44 serves as an air resistance, so that the wind is less likely to flow than in the direction of the bearing post 351. Therefore, the rectifying plate 192 is formed in a gentler arc shape than the rectifying plate 191, and guides air so as to pass under the motor cover 44.

  As described above, the bottom surface 101 of the main unit 10 has a rectangular frame-shaped plate body shown in FIG. 4 and the periphery of the bottom surface 101 of the main unit 10 when the bottom surface 101 of the main unit 10 and the air conditioner 1 are attached to the ceiling surface T1. A decorative panel 3 covering the ceiling surface T1 is attached.

  As shown in FIGS. 3 and 4, the decorative panel 3 includes a decorative panel body 30 having a blowout port 31, a suction grill 40 that is detachably attached to the center of the decorative panel body 30, and a corner portion of the decorative panel body 30. A corner panel 41 covering 30a, four wind direction plates 5 pivotally supported on the decorative panel body 30, a motor 43 driving each of the four wind direction plates 5, and a motor fixture for fixing the motor 43 to the decorative panel body 30 A suction grille frame that also serves as a fixing member that receives the suction grille 40 and fixes the panel heat insulation member 45 to the decorative panel main body 30. 46.

As shown in FIG. 5, the decorative panel body 30 includes a rectangular frame-shaped outer frame portion 33, a frame-shaped inner frame portion 34 that is disposed inside the outer frame portion 33 and accommodates the suction grill 40, and an outer frame portion. 33 and the inner frame portion 34 are formed by a connecting portion 35 that connects the corner portion 30a of the decorative panel body 30 on the body unit 10 side. A groove 32 a between the outer frame portion 33 and the inner frame portion 34 becomes a blowout passage 32, and an opening 31 formed between adjacent connection portions 35 in the blowout passage 32 matches the main body blowout port 31. It becomes.
In addition, a space formed on the lower surface side of the connection portion 35 at the corner portion of the outlet passage 32 becomes a corner corner outlet portion 36 described later.

  As shown in FIGS. 5, 6, and 7, the outer frame portion 33 hits the four sides of the decorative panel body 30 and faces the air conditioning chamber K, and the air outlet 31 side protrudes from the air conditioning chamber K and the ceiling surface T1 side is The decorative surface 331 is inclined so as to be close to the ceiling surface T1. The four corners 30 a that connect the decorative surface 331 have attachment portions 332. The decorative panel 3 can be fixed to the main unit 10 by screwing the screw hole 332a of the mounting portion 332 and the fixing portion 122 of the mounting bracket 12 together.

  As shown in FIG. 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 linear shape, and is connected to the connecting portion 35. The part connected to is a second straight part 333b inclined at 45 degrees with respect to the first straight part 333a, and an arc part 333c connecting the first straight part 333a and the second straight part 333b with a gentle arc.

  As shown in FIG. 6, the decorative surface 331 and the mounting portion 332 facing the air conditioning room K and the edge surface 333 facing the blowing passage 32 are connected by a curved surface 334 formed in an arc shape. In addition, a bearing arm 337 is provided at the center of the edge surface 333, which is an arm that protrudes toward the outlet 31 and extends downward, and a bearing portion 335 that pivotally supports the center of the wind direction plate 5 is provided at the lower end of the bearing arm. ing.

  As shown in FIGS. 5 and 6, the inner frame portion 34 of the decorative panel body 30 is provided on the inner wall portion 341 standing on the blowing passage 32 side and on the inner periphery of the inner wall portion 341, and a motor 43 described later. A cable passage 342 for guiding the cable 432 drawn out from the cable to the electrical component box 18.

  As shown in FIG. 6, a panel heat insulating member 45 is provided on the suction grill 40 side of the blowing passage 32. 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 conditioning chamber 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.

  The corner 452 of the panel heat insulating member 45 also has a curved surface 453 on the outlet passage 32 side, thereby serving as an outlet guide for guiding auxiliary outlet air W1, W2, and W3, which will be described later, to the corner corner outlet 36. The panel heat insulating member 45 is sandwiched and fixed between the suction grill frame 46 and the inner wall portion 341 of the inner frame portion 34 of the decorative panel body 30.

  The suction grille frame 46 has a decorative surface 461 that surrounds the suction grille 40 in a frame shape and is flush with the suction grille 40, and a receiving portion 462 that is provided with a step inside the decorative surface 461 and receives the suction grille 40, The receiving portion 462 is fixed to the cable passage 342 of the inner frame portion 34 of the decorative panel body 30 with a screw, thereby serving as a lid for the cable passage 342 and preventing the cable 432 from falling. The suction grille frame 46 has a quadrangular shape and is provided with a tapered surface 464 along a wind direction plate 5 to be described later at a corner of the blowing passage 32 side.

  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 FIG. 3, three rotation shafts 402 are provided on one side of the peripheral edge of the suction grill 40. A stopper 403 is provided on the back side of the suction grill 40. As shown in FIG. 5, bearing portions 343 and 463 that pivotally support the rotating shaft 402 of the suction grill 40 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 grill frame 46, respectively. Provided. Further, the stopper 403 is engaged with a stopper hole 345 provided in the cable passage 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 rotary shaft 402 is rotated by the bearing portions 343 and 463 and is rotated, and the stopper 403 is locked by the stopper hole 345 while being attached in the reverse operation. By this, it is fixed to the decorative panel body 30.

  When the parts constituting the decorative panel 3 are combined, the blowout passage 32 has an outer peripheral side that is the edge surface 333 and the curved surface 334 of the outer frame portion 33 of the decorative panel main body 30, an inner peripheral side that is the panel heat insulating member 45, and a bottom surface of the groove 32a. The side is comprised with the blower outlet 31, the connection part 35, and the motor cover 44 mentioned later.

  As shown in FIG. 4, the wind direction plate 5 is provided so as to cover the entire blowout passage 32 in accordance with the blowout passage 32 including the blowout ports 31 provided around the entire periphery of the decorative panel 3 so as to surround the suction grill 40. . The four wind direction plates 5 have the same shape, and a gap is formed in accordance with the rectangular diagonal D of the decorative panel 3 so that adjacent wind direction plates 5 do not come into contact with each other.

  As shown in FIGS. 4 and 8B, the wind direction plate 5 has a portion facing the outlet 31 as a wind direction portion 51, and a portion facing the corner corner outlet portion 36 of the outlet passage 32 at the end of the wind direction portion 51. The auxiliary wind direction portion 52 is used. 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 portion 56 that rises perpendicularly to 553 and is connected to the third side portion 53 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 gently curved surface that bulges outward.

  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 side portions 55 are parallel, and the auxiliary wind direction portion 52 has an angle closer to the vertical than the wind direction portion 51.

  The wind direction plate 5 is attached to the decorative panel body 30 by a shaft portion 511 provided on the back surface 58 of the wind direction portion 51 and shaft portions 521 and 522 provided on the back surface 58 of the auxiliary wind direction portion 52 shown in FIGS. It is pivotally supported. The shaft portion 511 is pivotally supported by the bearing portion 335 of the bearing arm 337 protruding from the outer frame portion 33 of the decorative panel main body 30 to the outlet 31 side, and the shaft portion 521 is erected on the connection portion 35 of the decorative panel main body 30. The bearing support column 351 and the shaft portion 522 are respectively supported by the motor 43 housed in the motor cover. It is stably rotated by being pivotally supported at three places.

  As shown in FIG. 5 and FIG. 7, motors 43 that respectively rotate the four wind direction plates 5 are disposed in the corner corner blow-out portion 36 below the connection portion 35 (upward in FIG. 7) of the decorative panel body 30. The The motor 43 is accommodated in a motor cover 44 that also serves as a motor fixing tool that is fixed to the decorative panel body 30, and is fixed to the connection portion 35 integrally with the motor cover 44.

  The connection portion 35 is provided with a bearing support column 351 on the side of one air outlet 31, and a recessed portion that is one step down and occupies a half surface of the connection portion 35 is formed on the other air outlet 31 side. This recess serves as a motor cover attachment portion 352 for attaching the motor cover 44.

  As shown in FIGS. 7, 9, and 10, the motor cover 44 attached to the motor cover attaching portion 352 includes a bottom passage 441 that contacts the motor cover attaching portion 352 and a motor that contacts the edge surface 333 of the outer frame portion 33. 43, a locking portion 447 provided protruding from the motor storage portion 442 toward the edge surface 333, a wall surface 444 that contacts the inner wall portion 341 of the inner frame portion 34, and a motor storage from the wall surface 444. A rib 448 that houses a part of the panel heat insulating member 45 between the wall surface 444 on the side of the portion 442 and a screw hole 449 a in a flange 449 provided so as to overlap the cable passage 342 of the inner frame portion 34 from the wall surface 444.

  In the bottom passage 441, the base end portion 441a of the motor storage portion 442 is raised one step higher, and the cable 432 of the motor 43 stored in the motor storage portion 442 is passed through the cable passage 342 from the vicinity of the screw hole 449a. It has become.

  The motor cover 44 through which the cable 432 is passed locks the locking portion 447 into the locking hole 336 provided in the outer frame portion 33 of the decorative panel body 30, and further the boss provided in the cable passage 342 of the inner frame portion 34. The screw hole 449a of the flange 449 is screwed to the 342a to be fixed to the decorative panel body 30.

  As a result, the motor 43 is mounted in the blowout passage 32, and can be further attached and detached from the surface of the decorative panel, so that it is not necessary to remove the decorative panel 3 from the main unit 10 during maintenance of the motor 43, for example. Is improved.

  The motor storage portion 442 has a mountain shape in which the outlet 31 side protrudes from the diagonal end D side of the base end portion 441a and the decorative panel 3 toward the air conditioning chamber K.

  The motor housing portion 442 includes a bearing surface 446 surrounding the bearing portion 431 of the motor 43 on the air outlet 31 side, and the bearing surface 446 is inclined downward from the mountain-shaped top of the motor housing portion 442 toward the air outlet 31 side. It becomes a surface.

  The motor cover 44 can reduce the blockage of the flow of the air W2 blown out to the corner corner blowing portion 36 as shown in FIG. 12 by making the bearing surface 446 an inclined surface.

  As shown in FIG. 11, a plate-like bearing support column 351 is erected on the other outlet 31 side of the connection portion 35, and the bearing support column 351 has a shaft hole that supports the shaft portion 521 of the wind direction plate 5 at the tip. 351a, and a vent hole 351b serving as a cavity is provided between the shaft hole 351a and the connecting portion 35.

  By providing the ventilation hole 351b in the bearing support column 351, the air W1 directed to the corner corner outlet portion 36 as shown in FIG. 12 reduces the resistance of the bearing support column 351 by passing through the ventilation hole 351b, A lot of air W1 can be led. Further, by providing the bearing post 351 with the vent hole 351b, it is possible to prevent the occurrence of condensation due to a temperature difference between the surfaces of the bearing post 351 on the outlet 31 side and the corner corner outlet 36 side. This eliminates the need to attach a heat insulating material to the bearing post 351.

  Next, the effect by rotation of the decorative panel main body 30 and the wind direction board 5 which combined each component is demonstrated. First, when the operation of the air conditioner 1 is stopped, as shown in FIG. 1 and FIG. 4, the wind direction plate 5 is made up by covering the entire outlet passage 32 surrounding the suction grille with the adjacent four wind direction plates 5. Visible in a line parallel to the panel and the suction grille, the design is unified and the design is improved.

  Next, when the air conditioner 1 starts operation, the shaft portion 522 of the wind direction plate 5 pivotally supported by the bearing portion 431 of the motor 43 rotates as shown in FIG. As a result, the shaft portion 511 supported by the bearing portion 335 and the shaft portion 521 supported by the bearing support column 351 also rotate. The first side 54 side of the wind direction plate 5 rotates toward the blowing passage 32 in accordance with the rotation. The wind direction plate 5 rotates up to about 60 degrees.

  When the wind direction plate 5 rotates, the first side portion 54 on the suction grill 40 side moves into the blowing passage 32, and the third side portion 53 and the fourth side portion 56 sink into the corner corner outlet portion 36. Only the straight portion 551 and the second arc portion 552 in the second side portion 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.

  The air blown from the blower fan 23 passes through the blowout port 31 and is guided to the wind direction portion 51 of the wind direction plate 5 and is blown out vigorously as the air W to the air conditioning room K.

  On the other hand, a part of the blown-out air W is also blown out in the longitudinal direction of the blowout port 31 by the rectifying plates 191 and 192 with reference to FIG. The airs W1 and W2 guided by the rectifying plates 191 and 192 are guided along the auxiliary wind direction portion 52 of the wind direction plate 5 to the corner corner blowing portion 36 at the corner of the blowing passage 32.

  Since the air W1 guided in the direction of the bearing column 351 by the rectifying plate 191 has no air resistance, a lot of wind flows. The air W1 passes through the vent hole 351b of the bearing post 351 and reaches the corner corner outlet 36. On the other hand, the air W <b> 2 guided by the rectifying plate 192 is less likely to flow than the direction of the bearing column 351 because the motor cover 44 serves as air resistance. Therefore, by making the bearing surface 446 of the motor cover 44 an inclined surface, the flow of the air W2 is reduced and guided to the corner corner outlet 36.

  The air W <b> 1 and the air W <b> 2 merge at the corner corner blowing part 36. In the air W1 and the air W2, the air W1 is more vigorous because the air W1 has more wind flowing therethrough. Therefore, the air W2 is pulled in the blowing direction of the air W1. As shown in FIG. 13, the air W <b> 1 and the air W <b> 2 merge together with the air W blown from the blower outlet 31 to become the air W <b> 3, and the air W <b> 1 is inclined more than the diagonal line D of the decorative panel 3. Is done. The air W <b> 3 is blown out along the four sides of the decorative panel 3, so that the air W <b> 3 is blown out in four directions different from the air W. As a result, the ceiling-embedded air conditioner 1 that can blow air in all directions and efficiently air-conditions a large room is obtained.

1: ceiling-embedded air conditioner (air conditioner), 10: main unit, 15: main body outlet, 16: suction port, 18: electrical component box, 191/192: current plate 23: blower fan, 25: Heat exchanger 3: decorative panel, 30: decorative panel body, 31: outlet, 32: outlet passage, 33: outer frame portion, 34: inner frame portion, 35: connection portion, 351: bearing post, 351b: Ventilation hole 36: Corner corner outlet 40: Suction grill, 43: Motor, 431: Bearing, 44: Motor cover, 442: Motor housing, 446: Bearing surface, 45: Panel insulation member, 46: Suction grill frame 5: Wind direction plate, 51: Wind direction section, 511: Shaft section, 52: Auxiliary wind direction section, 521/522: Shaft section D: Diagonal line, K: Air conditioning room, T ceiling, W / W1 / W2 / W3: Air

Claims (1)

A box-shaped main body unit that is embedded in the ceiling of the air-conditioning room and includes a blower fan and a heat exchanger that surrounds the blower fan, and a ceiling-buried panel that is attached to the lower surface of the main body unit and covers the ceiling. In the built-in air conditioner,
The decorative panel is formed by a frame-shaped outer frame portion, a frame-shaped inner frame portion disposed inside the outer frame portion, and a connection portion that connects the outer frame portion and the inner frame portion at corners. The space between the outer frame portion and the inner frame portion serves as a blowout passage, and an opening between the connecting portions adjacent in the blowout passage serves as a blowout port, along the square sides of the decorative panel. The blowout passage is covered with a wind direction plate that is longer than the long side of the blowout port, and the wind direction plate has a wind direction portion that faces the blowout port, and an auxiliary wind direction portion that faces the blowout passage at the end of the wind direction portion. And when the wind direction plate rotates and the inner frame portion side of the wind direction plate moves into the blowout passage, the auxiliary wind direction portion and the connection portion of the wind direction plate form a corner corner blowout portion. and, wherein the wind direction plate is provided with a shaft portion, the connecting uprights for the plate-shaped bearing is erected, the column forming the bearing of the shaft portion to the distal end Ceiling embedded air conditioner which is characterized in that, a vent is provided between the shaft hole and the connecting portion provided with a shaft hole for supporting.

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