JP2019178830A - Ceiling embedded type air conditioner - Google Patents

Abstract

To improve heat exchange performance of a ceiling embedded type air conditioner.SOLUTION: A ceiling embedded type air conditioner includes a body unit 200 and a decorative panel 300 having an air inlet 350 and a blow-out guide cylinder 320. A first space S1 communicating with the air inlet 350 of the decorative panel is formed between a second heat exchanger 620 at the back side of the body unit 200 and a back plate 530 of a housing, a second space S2 is formed between the first heat exchanger 610 at the front side and a front plate 520 of the housing, and a third space S3 allowing communication between the first space S1 and the second space S2 is formed between a lower surface 810b of a drain pan 800 and the decorative panel 300.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a ceiling-embedded air conditioner (indoor unit).

  A ceiling-embedded air conditioner installed behind a ceiling in an air-conditioned room has a box-type main unit installed behind the ceiling and a decorative panel that covers the lower surface of the main unit and is exposed on the ceiling of the room. The refrigerant circuit is formed by being connected to an outdoor unit installed outdoors by refrigerant piping.

  FIG. 11 shows a conventional ceiling-embedded air conditioner. Reference numeral 10 denotes a main unit, and 20 denotes a decorative panel. The main body unit 10 is surrounded by a casing 11 made of a steel plate on the upper surface and the periphery. And inside the main unit 10, a heat exchanger 12 that exchanges heat with the refrigerant that passes through the air, a sirocco fan 13 that sucks air from the suction port 21 of the decorative panel 20 via the heat exchanger 12, A drain pan 14 that collects dew generated in the heat exchanger 12 and a blowout guide cylinder 15 that guides the air blown from the sirocco fan 13 to the blowout port 22 of the decorative panel 20 are provided. The sirocco fan 13 includes an impeller 13a, a fan casing 13b, a fan motor 13c, and the like. A similar ceiling-embedded air conditioner is described in Patent Document 1.

JP 2000-2137767 A

  By the way, in order to improve the heat exchange performance in the ceiling-embedded air conditioner of FIG. 11, in addition to the space S1 between the heat exchanger 12 and the back plate 11a of the housing 11, the sirocco fan 13 and the front of the housing It is conceivable that a space S2 is newly provided between the face plate 11b and a heat exchanger different from the heat exchanger 12 is disposed in the space S2. The sirocco fan 13 and the heat exchanger are disposed in this space S2. No. 12 obstructs and the air sucked into the space S1 from the suction port 21 of the decorative panel 20 cannot enter.

  An object of the present invention is to provide a ceiling-embedded type in which a heat exchanger is arranged in a space inside a front plate of a housing so that air sucked from a suction port can be fed into the space, and heat exchange performance is improved. It is to provide an air conditioner.

In order to achieve the above object, the invention according to claim 1 is a ceiling-embedded air conditioner comprising a main unit, and a decorative panel that has a suction port and a blowing guide tube and is attached to the bottom surface of the main unit. The main unit is a box-shaped housing having a top plate, a front plate, a back plate, a left side plate, and a right side plate, and a first heat exchanger disposed on the front plate side of the housing, The second heat exchanger disposed on the back plate side of the housing, and disposed between the first heat exchanger and the second heat exchanger, and the first heat from the suction port of the decorative panel A fan unit using a sirocco fan that sucks air through the exchanger and the second heat exchanger and blows it out from the blow-out cylinder, and collects dew generated in the first heat exchanger and the second heat exchanger and Blown out from the blowing tube A drain pan having a blowing opening for guiding air to the blowing guide tube of the decorative panel, and forming a first space communicating with the suction port of the decorative panel between the second heat exchanger and the back plate And a third space that forms a second space between the first heat exchanger and the front plate, and communicates the first space and the second space between the lower surface of the drain pan and the decorative panel. Is formed.
According to a second aspect of the present invention, in the ceiling-embedded air conditioner according to the first aspect, the blowing guide tube is disposed in the third space.

  According to the present invention, since air can be sent from the first space to the second space through the third space, heat exchange of the air that has flowed into the second space can be performed in the first heat exchanger. For this reason, the heat exchange capacity can be increased, and the heat exchange performance of the ceiling-embedded air conditioner can be improved.

It is explanatory drawing which shows the installation state of the ceiling-embedded air conditioner of the Example of this invention. It is a perspective view of the ceiling-embedded air conditioner of FIG. FIG. 3 is a perspective view of a main unit of the ceiling-embedded air conditioner of FIG. 2. It is a disassembled perspective view of the main body unit of FIG. It is a top perspective view of a drain pan. It is a perspective view of a reinforcement metal fitting. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a perspective view showing the AA cross section of FIG. It is a schematic explanatory drawing of the conventional ceiling-embedded air conditioner.

  The ceiling-embedded air conditioner 100 according to the embodiment of the present invention will be described below. As shown in FIG. 1, this ceiling-embedded air conditioner 100 is attached to a ceiling T1 of an air-conditioning room R, and is connected to an outdoor unit (not shown) installed outdoors by a refrigerant pipe to provide a refrigerant circuit. Form. The ceiling-embedded air conditioner 100 includes a box-shaped main body unit 200 disposed on the ceiling back T2 and a decorative panel 300 attached to the bottom surface of the main body unit 200 so as to be exposed to the air conditioning room R side. As shown in FIG. 2, the main unit 200 includes an electrical component box 400 having a control circuit mounted on a side surface.

  The decorative panel 300 is formed with blowing guide tubes 310, 320, 330, and 340 as outlets from the front left side to the right side. The air passing through the left blowout guide tube 310 is rotated by the blowout guide tube 310 and the vertical wind direction plate 311 that rotate together with the leftmost rotary plate 380, and the air passing through the central blowout guide tubes 320 and 330 is the common vertical wind direction plate. 321 allows the air passing through the rightmost blowing guide cylinder 340 to be adjusted in the vertical blowing direction by the blowing guide cylinder 340 and the vertical airflow direction plate 341 that rotate together with the rightmost rotating plate 390. The rotating plate 380 is formed to be able to rotate 90 degrees to the left from the state of FIG. 2, and the rotating plate 390 can be rotated to 90 degrees to the right from the state of FIG.

  A suction port 350 having a shape that is long in the left-right direction is formed behind the arrangement of the blowing guide tubes 310, 320, 330, 340 on the lower surface 370 of the decorative panel 300 (the surface facing the air conditioning room R shown in FIG. 1). The suction port 350 is covered with a grill 360. And between this grill 360 and the front part 372 of the lower surface 370 of the decorative panel 300, between the grill 360 and the up-and-down wind direction plates 311 to 341 becomes a convex part 371 protruding downward as described later, Projecting downward from the portion 372.

  FIG. 3 shows a state in which the decorative panel 300 is removed and the main unit 200 is viewed from below, and FIG. 4 is a development view of the main unit 200 viewed from below. In addition to the electrical component box 400 described above, the main unit 200 includes a steel plate casing 500, a heat exchanger 600, a fan unit 700, a drain pan 800, a suction port 910, and a discharge pump 920. Is provided.

  The casing 500 is a box shape formed of a rectangular top plate 510 and a front plate 520, a back plate 530, a left side plate 540, and a right side plate 550 extending downward from four sides of the top plate 510. The electrical component box 400 shown in FIG. 2 is attached to the right side plate 550, and the drain pipe 551 is attached to the same right side plate 550. Further, two mounting brackets 560 are attached to the top surface plate 510 side of the left side plate 540 and the right side plate 550. The main unit 200 is installed on the ceiling T2 by suspending the mounting bracket 560 with a suspension bolt (not shown) fixed to the ceiling T2.

  The heat exchanger 600 is housed in the housing 500, and includes a first heat exchanger 610 disposed on the front plate 520 side of the housing 500 and a second heat exchanger 620 disposed on the back plate 530 side. Have. The upper side of the first heat exchanger 610 is inclined toward the front plate 520 of the casing 500, and the upper side of the second heat exchanger 620 is inclined toward the rear plate 530 of the casing 500. The upper ends of the heat exchanger units 610 and 620 are attached to the top plate 510 of the housing 500. Further, a motor shaft support plate 630 for supporting a motor shaft 712 described later is attached to each end portion of the heat exchangers 610 and 620 on the left side plate 540 side, and the right side plate 550 side of the heat exchangers 620 and 630 is attached. A motor shaft support plate 640 that supports a motor shaft 713, which will be described later, is attached to each end portion.

  The fan unit 700 includes a biaxial fan motor 710 having a motor mounting base 711, two impellers 721 and 722 fixed to one rotating shaft 712 of the fan motor 710, and the other of the motor 710. It has two impellers 723 and 724 fixed to the rotating shaft 713 and fan casings 731 to 734 that individually surround the impellers 721 to 724. The fan casings 731 to 734 include upper surface attachment portions 731a to 734a attached to the top plate 510 of the casing 500, side suction openings 731b to 734b, and blowout cylinders 731c to 734c formed so as to protrude downward. Respectively. The impeller 721 and the fan casing 731, the impeller 722 and the fan casing 732, the impeller 723 and the fan casing 7331, and the impeller 724 and the fan casing 734 each form a sirocco fan.

  The drain pan 800 is formed of a heat insulating material 810 made of polystyrene foam. In this heat insulating material 810, four blowout openings 821 to 824 penetrating from the upper surface 810a to the lower surface 810b are formed in a row in the horizontal direction. Further, as shown in FIG. 5, the drain pan 800 is formed in a substantially rectangular shape having the back end portion 810c and the front end portion 810d as long sides.

  A groove 833 that receives dew generated in the heat exchanger 630 is formed between the outer wall 831 on the back end 810c side and the inner wall 832 on the back side on the upper surface 810a of the heat insulating material 810. Further, a groove 843 for receiving dew generated in the second heat exchanger 620 is formed between the outer wall 841 on the front end 810d side and the inner wall 842 on the front side. Further, a groove 853 is also formed between the outer wall 851 on the right end 810e side and the inner wall 852 on the right side. Further, a groove 834 serving as a dew receiving part attached to the outside of the fan casings 731 to 734 is also formed between the inner wall 832 and the peripheral walls 821a to 824a of the blowout openings 821 to 824. Further, a groove 844 is formed between the inner wall 842 and the peripheral walls 821a to 824a of the blowout openings 821 to 824 so as to serve as a dew receiving portion attached to the outside of the fan casings 731 to 734. Further, a drain tank 860 is formed at the right rear of the upper surface 810 a of the heat insulating material 810. The groove 833 and the groove 853 are continuous with the drain tank 860, and the groove 843 is continuous with the groove 853. That is, the drain water collected in the grooves 833, 843, and 853 is collected in the drain tank 860. The grooves 843 and 844 do not communicate with the grooves 833 and 843.

  On the side of the lower surface 810b of the heat insulating material 810, a reinforcing metal fitting 870 having a shape as shown in FIG. The reinforcing metal fitting 870 includes a long piece 871 corresponding to the back end 810c of the drain pan 800, a long piece 872 corresponding to the front end 810d, a short piece 873 connecting the left side of the long piece 871 and the long piece 872 in FIG. 871 and the long piece 872 have a short piece 874 connecting the right side in FIG. 6 and mounting pieces 875,876. The overall shape of the reinforcing metal fitting 870 is a rectangular shape surrounding the outside of the arrangement of the blowing openings 821 to 824 of the drain pan 800 by the long pieces 871 and 872 and the short pieces 873 and 874. For embedding the reinforcing metal fitting 870 in the heat insulating material 810, the reinforcing metal fitting 870 is positioned in advance in a mold for molding the heat insulating material 810, and then foamed polystyrene is embedded. Thus, the reinforcing metal fitting 870 is integrated with the heat insulating material 810 so that the long pieces 871 and 872 are embedded in the heat insulating material 810 and the short pieces 873 and 874 and the mounting pieces 875 and 876 are exposed.

  The blowing guide tube 310 of the decorative panel 300 communicates with the blowing opening 821 of the drain pan 800, the blowing guide tube 320 communicates with the blowing opening 822 of the drain pan 800, and the blowing guide tube 330 communicates with the blowing opening 823 of the drain pan 800. The guide tube 340 is formed so as to communicate with the blowout opening 824 of the drain pan 800. As described above, the up-and-down air direction plate 311 of the left blowing guide tube 310 and the up-and-down air direction plate 341 of the right blowing guide tube 340 can be adjusted by 90 degrees as described above.

  Here, the blowing guide cylinder 320 will be described as a representative. As shown in FIG. 7, the blowing guide tube 320 is arranged so that the upper end opening 322 communicates with the blowing opening 732 c of the fan casing 732 and the blowing opening 822 of the drain pan 800, and the lower end opening 323 faces obliquely downward in the front direction. The ventilation path 324 from the upper end opening 322 to the lower end opening 323 has a smoothly curved shape. An upper and lower airflow direction plate 321 shared with the airflow guide tube 330 is attached to the lower end opening 323 as the airflow opening, and a left and right airflow direction plate 325 for the airflow guide tube 320 is attached to the deep upper portion of the ventilation path 324. Further, the lower end 323 a of the lower end opening 323 projects downward from the front portion 372 of the lower surface 370 of the decorative panel 300. A left and right wind direction plate (not shown) similar to the left and right wind direction plate 325 is also installed in a ventilation path (not shown) of the blowing guide tube 330. The left end blowing guide tube 310 and the right end blowing guide tube 340 are provided with left and right wind direction plates (not shown), and the upper and lower wind direction plates 311 and 341 can be rotated by the rotation of the rotation plates 380 and 390. Since this is not related to the present invention, a detailed description thereof will be omitted.

  Here, the assembly of the ceiling-embedded air conditioner 100 will be described with reference to FIG. 4 as appropriate. First, the casing 500 of the main unit 200 is placed with the top plate 510 side facing the assembly table, and the assembled first heat exchangers 610 and 620 are fixed inside the top plate 510.

  Next, after the assembled fan unit 700 is positioned between the first heat exchangers 610 and 620, the motor mounting base 711 of the motor 710 is screwed to the top plate 510, and one rotating shaft 712 is attached. The motor shaft support plate 630 is supported, and the other rotating shaft 713 is supported by the motor shaft support plate 640. Further, the upper surface mounting portions 731 a to 734 a of the fan casings 731 to 734 are screwed to the top plate 510.

  At this time, as shown in FIG. 4, the distance between the center C1 of the motor rotation shafts 712 and 713 of the fan unit 700 and the center C2 in the vertical direction of the front first heat exchanger 610 is L1, and C1 and the back side When the distance from the center C3 in the vertical direction of the second heat exchanger 620 is L2, the fan unit 700 is arranged in front of the second heat exchanger 620 on the back side by arranging L1 <L2. 1 Move closer to the heat exchanger 610.

  Next, the drain pump 900 is attached to the inside of the right side plate 550 of the casing 500, and the discharge port 920 is connected to the drain pipe 551 shown in FIG. Then, the second heat exchanger 620 is aligned with the groove 833 of the upper surface 810a of the drain pan 800, the first heat exchanger 610 is aligned with the groove 843, and then the drain pan 800 enters the inside of the casing 500. Then, the short side 873 of the reinforcing metal fitting 870 is screwed to the left side plate 540 of the housing 500, and the mounting pieces 875 and 876 are screwed to the right side plate 550. The drain pan 800 attached in this way has its back end portion 810c facing a space S1 described later, and the front end portion 810d facing a space S2 described later.

  As described above, the blowing cylinders 731c to 734c of the four fan casings 731 to 734 of the fan unit 700 enter inside the peripheral walls 821a to 824a of the four blowing openings 821 to 824 on the upper surface 810a side of the drain pan 800, and the fan casing 731. The blowing cylinders 731 c to 734 c of ˜734 communicate with the blowing openings 821 to 824 of the drain pan 800. Further, the suction port 910 of the drain pump 900 is located in the drain tank 860 of the drain pan 800.

  Since the assembled main unit 200 is packaged separately from the decorative panel 300, when installing the ceiling-embedded air conditioner 100, first, the packaging is unpacked and then embedded in the ceiling T2. The main unit 200 is suspended from a plurality of suspension bolts and installed on the ceiling T2. And the decorative panel 300 is attached from the air-conditioning room R side shown in FIG. At this time, as shown in FIG. 7, the upper end opening 322 of the blowing guide cylinder 320 of the decorative panel 300 is inserted into the blowing opening 822 from the lower surface 810 b of the drain pan 800 and communicated with the blowing cylinder 732 c of the fan casing 732. Similarly, the remaining blowing guide cylinders 310, 330, and 340 are inserted into the blowing openings 821, 823, and 824 of the drain pan 800 and communicated with the blowing cylinders 731c, 733c, and 734c of the fan casings 731, 733, and 734, respectively. Then, the decorative panel 300 is screwed to the housing 500 of the main unit 200, and a refrigerant pipe, a power supply line, a signal line, and the like (not shown) are connected.

  As shown in FIG. 8, the ceiling-embedded air conditioner 100 assembled as described above includes a space S1 between the second heat exchanger 620 on the back side and the back plate 530, and the first heat on the front side. A space S <b> 2 between the exchanger 610 and the front plate 520 of the casing 500 communicates with a space S <b> 3 between the lower surface 810 b of the drain pan 800 and the decorative panel 300. The blowing guide cylinders 310 to 340 are disposed in the space S3, and the space S3 also serves as a space for communicating with each other.

  From the above, in the ceiling-embedded air conditioner 100 according to the present embodiment, the blowout guide cylinder 320 has the lower end 232a of the lower end opening 323 protruding below the front part 372 of the lower surface 370 of the decorative panel 300, and the lower end opening 323 thereof. The opening surface of is directed diagonally forward and downward. Further, the ventilation path 324 is smoothly curved toward the lower side of the front plate 520. For this reason, the air blown by the rotation of the impeller 722 is less likely to receive airflow loss by the blowout guide cylinder 320, and the distance of the blown airflow to the front of the ceiling-embedded air conditioner 100 can be increased. . The same applies to the blowing guide tubes 310, 330, and 340.

  Further, the air sucked from the suction port 350 of the decorative panel 300 reaches the second heat exchanger 620 from the space S1 between the second heat exchanger 620 on the back side and the back plate 530. Further, the air sucked from the suction port 350 of the decorative panel 300 is a space S3 between the lower surface 810b of the drain pan 800 and the decorative panel 300 and between the blowing guide tubes 310 to 340, and the first heat exchanger 610 on the front side. The first heat exchanger 610 on the front side is also reached via the space S2 between the front plate 520 and the front plate 520. For this reason, it becomes possible to send a sufficient amount of air into the first heat exchanger 610 that is farther away from the suction port 350 than the second heat exchanger 620, and the heat generated by the first heat exchanger 610. The exchange can be performed in the same manner as the second heat exchanger 620, and the heat exchange efficiency of the ceiling-embedded heat exchanger can be increased. At this time, the upper side of the first heat exchanger 610 is inclined toward the front plate 520 of the casing 500, and the upper side of the second heat exchanger 620 is inclined toward the rear plate 530 of the casing 500. Since the air is sucked in from both the spaces S1 and S2, the angle at which the sucked air is changed becomes gentler from a right angle to an obtuse angle, and the ventilation resistance is reduced. In the first and second heat exchangers 610 and 620, The efficiency of heat exchange between the air and the refrigerant is higher than when there is no inclination. In addition, by tilting the first and second heat exchangers 610 and 620 in this way, the vertical width becomes longer compared to the case where the first and second heat exchangers 610 and 620 are erected, so that a heat exchanger having a larger heat exchange area corresponding thereto is provided there. It can arrange | position and the efficiency of heat exchange becomes high also in this aspect.

  Further, as shown in FIG. 7, the distance between the center C1 of the motor rotation shafts 711 and 712 of the fan unit 700 and the upper and lower center C2 of the first heat exchanger 610 is L1, and C1 and the second heat exchanger 620 are used. When the distance from the upper and lower center C3 is L2, L1 <L2. At this time, since the blowing cylinders 731c to 734c of the fan casings 731 to 734 are directly below, that is, to the direction of the drain pan 800, the blowing cylinders 731c to 734c are the first heat exchanger 610 and the second heat exchanger 620. Never hit. From the above, it is possible to arrange the fan unit 700 closer to the first heat exchanger 610 side than the second heat exchanger 620, and air is sucked into the first heat exchanger 610 close to the fan unit 700. The amount increases. For this reason, since the amount of air sucked into the first heat exchanger 610 is larger than the amount of air sucked into the second heat exchanger 620 than when L1 = L2, the air amount is larger than that of the second heat exchanger 620. Even in the first heat exchanger 610 having a long flow path, the heat exchange efficiency is the same as that of the second heat exchanger 620, and the balance is improved. That is, by setting L1 <L2, the amount of air sucked into the first heat exchanger 610 increases, and the balance of heat exchange efficiency in the first heat exchanger 610 and the second heat exchanger 620 is also improved. Further, when L2 is the same as the conventional one, the position of the first heat exchanger 610 is closer to the back plate 530 side of the housing 500, and therefore the front plate 520 of the housing 500 may be moved to the back plate 530 side. In addition, the longitudinal dimension of the housing 500 can be reduced. When the first heat exchanger 610 side of the fan casings 731 to 734 of the fan unit 700 is in contact with the first heat exchanger 610, the side of the fan casings 731 to 734 facing the first heat exchanger 610 is 7 may be formed in a horizontal plane shape cut at the line D1 portion shown in FIG.

  Further, the fan casings 731 to 734 of the fan unit 700 are arranged so that the periphery of the blowing cylinders 731 c to 734 c enter the inside of the peripheral walls 821 a to 824 a of the blowing openings 821 to 824 of the drain pan 800. On the other hand, in the drain pan 800, a groove 834 is formed on the side of the peripheral walls 821a to 824a of the groove 833 for the second heat exchanger 620, and a groove 844 on the side of the peripheral walls 821a to 824a of the groove 843 for the first heat exchanger 610. Is formed. Therefore, when dew adheres to the outside of the fan casings 731 to 734, the dew drops into the grooves 834 and 844 of the drain pan 800 and is received there, and is transmitted through the blowing guide tubes 310 to 340 of the decorative panel 300 to the room. It can prevent falling. Since the dew falling from the fan casings 731 to 734 is slight, the grooves 843 and 844 are not communicated with the grooves 833 and 843, but may be communicated.

  Further, a reinforcing metal fitting 870 is attached to the drain pan 800. The attachment is performed by embedding the reinforcing metal fitting 870 when the heat insulating material 810 of the drain pan 800 is manufactured, so that the drain pan 800 is integrated. The reinforcing metal fitting 870 increases the strength of the drain pan 800 itself. Conventionally, a reinforcing plate that supports the drain pan 800 from below is used. However, since the reinforcing metal fitting 870 is embedded on the lower surface 810b side of the drain pan 800, the drain pan 800 is supported from below, and the reinforcing plate is Can be omitted. Furthermore, since the short piece 873 and the attachment pieces 875 and 876 of the reinforcing metal fitting 870 are screwed to the casing 500, the casing 500 can be reinforced at the same time as the drain pan 800 is attached.

DESCRIPTION OF SYMBOLS 100: Ceiling embedded type air conditioner 200: Main body unit 300: Cosmetic panel, 310-340: Blowout guide cylinder, 322: Upper end opening, 323: Lower end opening, 311, 321, 341: Up and down wind direction plate, 350: Suction port 360: Grill, 370: Lower surface, 380, 390: Rotating plate 400: Electrical component box 500: Housing, 510: Top plate, 520: Front plate, 530: Back plate, 540: Left side plate, 550: Right side plate, 560: Mounting bracket, 551: Hose 600: Heat exchanger, 610: First heat exchanger, 620: Second heat exchanger, 630, 840: Motor shaft support plate 700: Fan unit, 710: Fan motor, 721 724: impeller, 731 to 734: fan casing, 731c to 734c: blowing cylinder 800: drain pan, 810: heat insulating material, 821 to 824: blowing Opening, 833, 834, 843, 844: groove, 860: drain tank, 870: reinforcing bracket 900: drain pump

Claims (2)

In a ceiling-embedded air conditioner comprising a main unit, and a decorative panel that has a suction port and a blowing guide tube and is attached to the bottom surface of the main unit,
The main unit includes a box-shaped housing having a top plate, a front plate, a back plate, a left side plate, and a right side plate, a first heat exchanger disposed on the front plate side of the housing, and the housing. A second heat exchanger disposed on the back plate side of the body, and disposed between the first heat exchanger and the second heat exchanger, the first heat exchanger from the suction port of the decorative panel And a fan unit using a sirocco fan that sucks air through the second heat exchanger and blows it out from the blowing cylinder, and collects dew generated in the first heat exchanger and the second heat exchanger and blows out the sirocco fan. A drain pan having a blowing opening for guiding the air blown from the tube to the blowing guide tube of the decorative panel;
A first space communicating with the suction port of the decorative panel is formed between the second heat exchanger and the back plate, and a second space is formed between the first heat exchanger and the front plate. And the 3rd space which connects the said 1st space and the said 2nd space between the lower surface of the said drain pan and the said decorative panel was formed, The ceiling embedded type air conditioner characterized by the above-mentioned. The ceiling-embedded air conditioner according to claim 1,
The blowout guide tube is disposed in the third space, and the ceiling-embedded air conditioner is provided.

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