JP2016099051A - Ceiling embedded type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling embedded type air conditioner that enables reduction in the number of components and processes and reduction in the thickness of a body unit.SOLUTION: A ceiling embedded type air conditioner 1 includes: a body unit 10 having a drain pan 60 with a resin drain sheet 61 and a heat insulating member 62 arranged on the lower surface of the drain sheet 61; and a decorative panel 3 mounted to the lower surface side of the body unit 10. Fixation pieces 71 are provided on a side wall 38 of the drain sheet 61, and a bearing portion 711 projecting through the heat insulating member 62 is provided at a tip of each of the fixation piece 71. The two fixation pieces 71 are horizontally juxtaposed to each other to pivotally support tips of a U-shaped hook 72 in the bearing portions 711. The decorative panel 3 includes lock claws 37. By locking the lock claws 37 on the hooks 72, the decorative panel 3 is fixed to the body unit 10.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a mounting structure for a main body unit and a decorative panel of a ceiling-embedded air conditioner.

  The ceiling-embedded air conditioner includes a box-shaped main body unit embedded in the ceiling of the air conditioning room and a decorative panel that is attached to the lower surface of the main body unit and covers the ceiling. The main unit has a blower fan and a heat exchanger that surrounds the blower fan in the center of the inside, a bell mouth that takes air from the suction port and guides it to the blower fan at the bottom of the blower fan, the outside of the bell mouth, and the main unit A drain pan covering the lower surface is arranged. The drain pan is composed of a resin drain sheet that receives drain water generated in the heat exchanger, and a polystyrene foam heat insulating member that is integrally formed with the drain sheet on the lower surface of the drain sheet. Provided with a blowout port for blowing out heat-exchanged air.

  The decorative panel includes a decorative panel fitting. The drain sheet is integrally provided with a side wall and a bottom wall that form a space in which the decorative panel fitting can be accommodated. At the lower end of the space portion formed by the side wall and the bottom wall, a metal fixing bracket is attached by foam integrated molding of a heat insulating member, and the decorative panel hooks the decorative panel bracket so that the decorative panel is a main unit. Suspended by. (See Patent Document 1)

JP 2003-336893 A

  However, the need for a metal fixing bracket increases the number of parts and requires a step of integrally molding with the heat insulating member. In addition, the heat insulating member needs to be thick by providing the drain sheet with side walls and a bottom wall that form a space for housing the decorative panel metal fitting, and by stably embedding the fixing metal fitting into the heat insulating member by foam integrated molding. It became a factor to become thick.

  The present invention solves the above-mentioned problems and reduces the number of parts and suppresses the thickness of the main unit by adopting a structure that does not require a fixing bracket embedded in the heat insulating member when attaching a decorative panel to the main unit. An object of the present invention is to provide a ceiling-embedded air conditioner that can be used.

  In order to solve the above-described problems, the present invention is directed to a blower fan disposed in the center of the interior, a heat exchanger surrounding the blower fan, a resin drain sheet that receives drain water generated in the heat exchanger, and the drain. In a ceiling-embedded air conditioner including a main body unit including a drain pan having a heat insulating member made of polystyrene foam provided on the lower surface of the sheet, and a decorative panel attached to the lower surface side of the main body unit, the drain sheet includes the A dew receiving portion for receiving drain water projects from the heat insulating member, a fixed piece is provided on a side wall of the dew receiving portion, and the fixed piece penetrates the heat insulating member at a tip and protrudes from the heat insulating member. The fixing piece is provided side by side in the axial direction of the bearing portion in order to pivotally support the shaft portion at the tip of the U-shaped hook on the bearing portion, and the decorative panel is locked Have nails , Wherein the decorative panel by the locking pawl is engaged with the hook is fixed to the main unit.

  Further, it is also included that the fixing piece is provided on each of the facing side walls.

  Further, the hook is suspended from the decorative panel, a pair of arms bent at right angles in the same direction from both ends of the suspension, and further bent at a right angle toward the fixed piece, Each arm portion is parallel to the suspension portion and is bent at a right angle in a direction away from each other, and is supported by the bearing portion, and the heat insulating members are arranged side by side. A recess that matches the interval between the fixed pieces is provided in a portion through which the fixed piece penetrates, and the hook is pivotally supported on the fixed piece by inserting the support shaft portion of the hook into the bearing portion from the inside of the concave portion. It is also included.

  The ceiling-embedded air conditioner of the present invention configured as described above has a structure that does not require a fixing bracket embedded in a heat insulating member when attaching a decorative panel to the main unit, thereby reducing the number of parts and the main unit. Thus, the ceiling-embedded air conditioner can be reduced.

1 is an external view of a ceiling-embedded air conditioner according to the present invention. It is sectional drawing of the ceiling-embedded air conditioner by this invention. It is the perspective view which decomposed | disassembled the main body unit and the decorative panel. It is an exploded view of a drain pan. It is explanatory drawing of a hook, (a) is a front view, (b) is a side view. It is a perspective view which shows the state which suspended the decorative panel in the drain pan. It is the figure which made the cross section the center of the arm part of a hook, (a) is sectional drawing which shows the main body unit at the time of shipment, (b) is sectional drawing which shows the state which temporarily fixed the decorative panel to the hook, (c) FIG. 5 is a cross-sectional view showing a state in which the decorative panel is fixed to the main unit.

  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 and 2 includes a box-shaped main unit 10 embedded in a ceiling T of an air-conditioned room K, and the main unit. 10 and a square-shaped decorative panel 3 attached to the lower surface 101.

  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. The side plate 11 is provided with a suspended portion 121 and a fixing portion 122 (see FIG. 3) at the upper and lower ends at four locations on the side plate 11a located along the short side of the top plate 13 and extending in the direction opposite to the side plate 11a. The mounting bracket 12 is fixed. 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.

  The decorative panel 3 has a quadrangular frame shape, and has an opening for the suction port 16 in the center, and a plurality of dot-shaped suction holes 401 are formed into a square shape as a whole in order to take air into the main body unit 10 in the opening. The suction grille 4 arranged in the detachable attachment is attached. Further, a blower outlet 31 is provided around the suction inlet 16 so as to match a main body blower outlet 15 which will be described later, and the blower outlet 31 is provided with a rotatable wind direction plate 5. At the four corners of the decorative panel 3, a human detection sensor 26, a display LED 27, and the like are provided.

  As shown in FIG. 3, the decorative panel 3 includes a locking claw 37 on the side wall 38 facing the opening for the suction port 16, and the locking claw 37 is locked to a hook 72 of a temporary fixing portion 70 of the main body unit 10 to be described later. And temporarily fixed to the main unit 10. While temporarily fixed, the wiring of the human detection sensor 26 and the display LED 27 and the wiring of the motor (not shown) that drives the wind direction plate 5 are connected to the electrical component box 18 described later. After the connection is completed, the decorative panel 3 is fixed to the fixing portion 122 at the lower end of the mounting bracket 12 of the main body unit 10 using the screws 81, so that the lower surface 101 and the lower surface 101 of the main body unit 10 are attached. Covers the ceiling surface T1 on the K side of the surrounding air-conditioned room.

  Referring again to FIG. 2, a heat insulating member 14 made of polystyrene foam is provided on the inner peripheral surface of the top plate 13 and the side plate 11 of the main unit 10. 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 is disposed in the center of the main unit 10 together with the fan motor 21.

  A trumpet-shaped bell mouth 24 is provided at the lower portion of the blower fan 23 so as to connect the suction port 16 and the blower fan 23 (form a ventilation path). The bell mouth 24 is made of resin and is positioned at the lower end of the suction guide portion 241 and the suction guide portion 241 that gradually spreads in a trumpet shape from the blower fan 23. A suction inlet frame 242 covering 401 is provided. An electrical component box 18 formed in an L shape is arranged in the suction inlet frame 242.

  The air in the air-conditioned room K is sucked into the suction port 16 from the suction hole 401 of the suction grill 4 by the blower fan 23 that is rotationally driven by the fan motor 21. The air sucked into the main unit 10 is guided to the blower fan 23 along the suction guide portion 241 of the bell mouth 24 and blown out toward the outside of the blower fan 23.

  The main unit 10 includes a drain pan 60 that fixes the suction port frame 24 of the bell mouth 24 and closes the lower surface 101 of the main unit 10.

  A heat exchanger 25 sandwiched between the heat insulating member 14 and the drain pan 60 is disposed around the blower fan 23. The heat exchanger 25 is a fin-tube type heat exchanger composed of a plurality of rectangular aluminum fins 251 stacked at a predetermined interval and a plurality of heat transfer tubes 252 arranged orthogonal to the aluminum fins 251. 25. The heat exchanger 25 is provided so as to surround the blower fan 23 along the four sides of the main unit 10.

  At one corner of the heat exchanger 25, the heat transfer tube 252 is drawn out between the end portions of the heat exchanger 25. Although not shown, one corner of the main body unit 10 prevents the connecting portion 28 for connecting the drawn heat transfer tube 252 with a pipe for connecting to an outdoor outdoor unit from protruding from the main body unit 10 as shown in FIG. It is provided with a recessed part.

  The heat exchanger 25 is connected to a reversible refrigerant circuit that can perform a cooling operation and a heating operation (not shown). The heat exchanger 25 functions as an evaporator and cools the air guided from the blower fan 23 during the cooling operation. During 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 main body unit 10 provided in the drain pan 60 make up the air blown from the blower fan 23. It becomes the ventilation path 17 guided to the blower outlet 31 of the panel 3. The air 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 of the decorative panel 3 into the air-conditioned room K.

  2 and 4, the drain pan 60 is a resin drain sheet 61 that receives drain water generated in the heat exchanger 25, and a foamed polystyrene foam that is integrally formed on the drain sheet 61 on the lower surface of the drain sheet 61. A heat insulating member (hereinafter referred to as a heat insulating member) 62. The heat insulating member 62 is formed in conformity with the concave and convex shape of the drain sheet 61 and prevents dew condensation generated on the drain sheet 61. The lower surface of the heat insulating member 62 is formed to be a smooth surface except for a part where the cable groove 63 is provided. Note that the drain sheet 61 and the heat insulating member 62 are not necessarily integrally molded, and may be combined separately.

  The drain sheet 61 and the heat insulating member 62 of the drain pan 60 each have an opening at the center for attaching the suction port frame 24 of the bell mouth 24, and a bell mouth mounting portion that forms a substantially rectangular recess around the suction port frame 24. Dew receiving parts 61b and 62b that receive drain water generated in the heat exchanger 25 around the bell mouth mounting parts 61a and 62a, and the main body outlet 15 (described above around the dew receiving parts 61b and 62b). 61c, 62c). The outer edge of the drain pan 60 is formed so as to be in contact with the side plate 11 without a gap so that the blown air does not escape from the gap.

  The drain sheet 61 is a molded product having a uniform thickness made of a resin having a thickness of about 2 mm. The drain sheet 61 forms the body unit 10 side of the bell mouth mounting portion 61a and the dew receiving portion 61b, and the body outlet 15 ( 61c), and a flange 611 that fills the space between the side plate 11 of the main body unit 10 without a gap at the outer edge of the main body outlet 15 (61c).

  Further, the drain sheet 61 includes a plurality of screw hole bosses 612 that pass through the heat insulating member 62 from the bell mouth mounting portion 61 a and protrude to the bell mouth mounting portion 62 a of the heat insulating member 62. The bell mouth 24 is fixed to the boss 612 with a screw.

  Referring also to FIG. 6, the dew receiving part 61 b of the drain sheet 61 protrudes on the heat insulating member 62 side in a dish shape surrounding the bell mouth mounting part 61 a in order to receive the drain water generated in the heat exchanger 25. ing. A fixing piece 71 is provided on the side wall 613 of the dew receiving portion 61b. The fixed piece 71 is a plate-like protruding piece extending toward the heat insulating member 62, and has a bearing portion 711 that penetrates the heat insulating member 62 at the tip and protrudes from the heat insulating member 62. The two fixing pieces 71 are arranged side by side in the axial direction of the bearing portion 711 in order to receive two supporting shaft portions 723 of the hook 72 described later. Let L be the interval between the fixed pieces 71 arranged side by side.

  The heat insulating member 62 is provided with an inclined surface 624 at a corner (surface) where the fixing piece 71 protrudes on the side wall 623 between the dew receiving portion 62b and the bell mouth mounting portion 62a. A concave portion 73 having a width equal to the interval L is provided at a position corresponding to the fixed piece 71 of the inclined surface 624. The fixed piece 71 just appears on the vertical rising surface 731 of the recess 73. The two fixed pieces 71 face each other in the recess 73, and the opposite outer surface is buried in the heat insulating member 62.

  A hook 72 is locked to the bearing portion 711. As shown in FIG. 5, the hook 72 is formed by bending one steel wire, and a hanging portion 721 that is locked to the locking claw 37 of the decorative panel 3 and a right angle in the same direction from both ends of the hanging portion 721. A pair of arm portions 722 and 722 that are bent at right angles toward the fixed piece 71, and are bent at right angles in a direction parallel to the suspension portion 721 from the tip of each arm portion 722 and away from each other. And support shaft portions 723 and 723 that are supported by the bearing portion 711. The steel wire may be a spring steel wire having elasticity.

  Referring again to FIG. 6, the hook 72 is elastically deformed and inserted into the recess 73, and the support shaft portion 723 is pivotally supported in the central hole 711 a of the bearing portion 711. The distal end of the support shaft portion 723 penetrates into the heat insulating member 62 that is a polystyrene foam. As a result, the hook 72 is pivotally supported by the fixed piece 71 so as to be rotatable.

  The fixing piece 71, the concave portion 73 and the hook 72 are combined to form a temporary fixing portion 70. The temporary fixing part 70 is also provided on the opposite side wall 613. In order to temporarily fix the decorative panel 3 in a well-balanced manner, the two temporary fixing portions 70 are preferably provided at positions that are symmetrical with respect to the decorative panel 3.

  The locking claw 37 of the decorative panel 3 is provided to protrude from the side wall 38 of the opening for the suction port 16 toward the suction port 16, and is wider from the front end of the locking piece 371 and wider than the interval L. And a hooking portion 372 that protrudes from the top. Moreover, it has the groove part 373 provided on the locking piece 371 from the hook part 372. Two grooves 373 are provided in accordance with the interval L. The hook portion 372 includes a convex portion 374 projecting from the groove portion 373.

  As shown in FIG. 7A, when the air conditioner 1 is shipped, the hook 72 is folded so that the arm portion 722 is in contact with the bottom surface of the heat insulating member 62, so that the main unit 10 is enlarged by the hook 72. Absent. 7B, when the decorative panel 3 is fixed to the main unit 10 embedded in the ceiling T by starting the mounting operation, first, the decorative panel 3 with the suction grill 4 removed is locked. The arm portions 722 and 722 of the hook 72 are inserted into the groove portions 373 and 373 of the claw 37. The arm portions 722 and 722 are pressed by the convex portions 374 and are not detached from the groove portions 373 and 373. When the hooks 72 of the two temporary fixing portions 70 are inserted into the locking claws 37 and the hand to be operated is released, the hanging portion 721 of the hook 72 is pressed by the hooking portion 372 and the decorative panel 3 is suspended from the main unit 10. Temporarily fixed.

  When the decorative panel 3 temporarily fixed is pushed up to the main unit 10 side and fixed with the screw 81 of FIG. 3, the arm portions 722 and 722 of the hook 72 are grooved 373 of the locking claw 37, as shown in FIG. Slide in 373. The hanging portion 721 of the hook 72 moves downward from the locking claw 37, but does not come off the locking claw 37 because the arm portions 722 and 722 are pressed by the convex portion 374 of the hooking portion 372.

  When removing the decorative panel 3 from the main unit 10 for maintenance, first, the screw 81 is removed from the fixing portion 122 of the mounting bracket 12 so that the decorative panel 3 is suspended. At this time, the arm portions 722 and 722 move in the groove portion 373 and return to the state of FIG. Next, the decorative panel 3 is removed from the main unit 10 by removing the hook 72 from the locking claw 37.

As described above, according to the present invention, the provisional fixing portion 70 is provided in the drain pan 60, so that the decorative panel 3 is fixed in a state in which the decorative panel 3 is suspended by the main unit 10 without providing a fixing bracket on the heat insulating member. Can proceed.
Further, since the temporary fixing portion 70 only needs to support the decorative panel 3 at the time of attaching and detaching work, the fixing piece 71 made of resin can be used, and fixing metal fittings which are conventional metal parts can be reduced, and further the metal parts are insulated. The process of integrally molding the member 62 can also be reduced, and the cost of parts can be reduced.
Moreover, it becomes possible to suppress the thickness of a heat insulation member by making it the structure which does not require the space for fixing brackets in a heat insulation member, and the thickness of the main body unit 10 can also be suppressed.

1: ceiling-embedded air conditioner (air conditioner), 10: main unit, 16: suction port, 18: electrical component box 23: blower fan, 24: bell mouth, 25: heat exchanger 3: decorative panel, 37: Locking claw 60: Drain pan, 61: Drain sheet, 62: Thermal insulation member 70: Temporary fixing part, 71: Fixing piece, 711: Bearing part, 72: Hook, 73: Concave part K: Air conditioning room, T1: Ceiling surface

Claims (4)

A blower fan disposed in the center of the interior, a heat exchanger surrounding the blower fan, a resin drain sheet that receives drain water generated in the heat exchanger, and a heat insulating member made of polystyrene foam provided on the lower surface of the drain sheet; In a ceiling-embedded air conditioner including a main body unit including a drain pan having a decorative panel attached to a lower surface side of the main body unit,
The drain sheet is provided with a dew receiving portion that receives the drain water on the heat insulating member side, a fixing piece is provided on a side wall of the dew receiving portion, and the fixing piece penetrates the heat insulating member at a tip. A bearing portion protruding from the heat insulating member, and the fixing piece is provided side by side in the axial direction of the bearing portion in order to pivotally support the shaft portion at the tip of the U-shaped hook on the bearing portion; The decorative panel has a locking claw, and the decorative panel is fixed to the main body unit by locking the locking claw to the hook.   The ceiling-embedded air conditioner according to claim 1, wherein the fixed piece is provided on each of the opposing side walls.   The hook includes a hanging portion that is locked to the decorative panel, a pair of arm portions that are bent at a right angle in the same direction from both ends of the hanging portion, and further bent at a right angle toward the fixed piece, and the arms. The support shaft portion that is bent at a right angle in a direction parallel to the suspended portion from the tip of the portion and away from each other, and locked to the bearing portion, and the heat insulating member is fixed side by side A recess that matches the interval between the fixed pieces is provided in a portion through which the piece passes, and the hook is pivotally supported by the fixed piece by inserting the support shaft portion of the hook into the bearing portion from the inside of the recess. The ceiling-embedded air conditioner according to claim 1 or 2. The ceiling embedded according to claim 1, wherein the heat insulating member is provided with an inclined surface on a surface from which the fixed piece protrudes, so that the fixed piece is flush with a lower surface of the main unit. Type air conditioner.

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