JP7180121B2 - Ceiling-mounted air conditioner - Google Patents

Description

The present invention relates to a ceiling-embedded air conditioner.

A ceiling-embedded air conditioner (indoor unit) installed behind the ceiling in an air-conditioned room is connected to an outdoor unit installed outdoors by refrigerant pipes to form a refrigerant circuit. A ceiling-mounted air conditioner has a main unit installed in the ceiling, and a decorative panel having an air inlet and an air outlet and attached to the indoor ceiling surface so as to cover the lower surface of the main unit.

The main unit includes a box-shaped housing, a heat exchanger arranged inside the housing, a sirocco fan arranged near the heat exchanger, and a drain pan for collecting dew generated in the heat exchanger. Prepare. The sirocco fan draws in air through a heat exchanger from a suction port of a decorative panel, and blows the air heat-exchanged with a refrigerant into a room from a blowout port (Patent Document 1).

The decorative panel generally has a horizontal airflow direction plate and a vertical airflow direction plate attached to the air outlet so that the blown air can be guided in the vertical direction and the horizontal direction.

JP-A-2000-213767

By the way, when a plurality of sirocco fans are used, for example, providing a plurality of outlets corresponding to the individual sirocco fans is not preferable in terms of appearance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ceiling-embedded air conditioner in which the air blown from a plurality of sirocco fans is blown out from a common outlet to improve the appearance.

In order to solve the above-mentioned problems, the invention according to claim 1 is a ceiling comprising a main unit, a decorative panel having an air inlet covered with an air inlet grill and a first air outlet and attached to the bottom surface of the main unit. In the embedded air conditioner, the main unit has a box-shaped housing, a heat exchanger arranged inside the housing, and a first blowout pipe, and is arranged inside the housing, a first sirocco fan for sucking air from the suction port of the decorative panel via the heat exchanger and blowing air from the first blowout cylinder; A second sirocco fan is provided for sucking air from the air inlet of the panel via the heat exchanger and blowing air from the second air outlet, wherein the decorative panel includes a lower middle cover formed with the first air outlet, and the second sirocco fan. a lower surface cover having a lower peripheral cover surrounding the lower surface intermediate cover; inside the lower surface intermediate cover, a first upper end opening and a first lower end opening are provided; 1 a first blowout guide cylinder connected to an upper end opening; and a second blowout guide cylinder having a second upper end opening and a second lower end opening and having the second blowout cylinder of the second sirocco fan, the second upper end opening being connected to the second blowout guide cylinder; A lower guide plate having an upper end and a lower end, wherein the upper end is commonly connected to the first lower end opening of the first blowout guide tube and the second lower end opening of the second blowout guide tube, and the lower end is connected to the lower surface. The first air outlet is formed so as to protrude downward from the surrounding cover, the first ventilation passage is formed continuously from the upper end to the lower end, and the first ventilation passage extends downward on the front end side of the decorative panel. and a lower guide plate curved in such a manner that a first vertical wind direction plate is attached inside the lower end of the lower guide plate.
The invention according to claim 2 is the ceiling-embedded air conditioner according to claim 1, wherein the lower guide plate is positioned on the first lower end opening side of the first blow-out guide cylinder in the first ventilation passage. A first left/right airflow direction plate is attached, and a second left/right airflow direction plate is attached to the second lower end opening side of the second air outlet guide cylinder in the first ventilation passage.
The invention according to claim 3 is the ceiling-embedded air conditioner according to claim 1, wherein the lower guide plate has the first ventilation passage leading to the first lower end opening of the first blowout guide tube. It is separated into a second ventilation passage and a third ventilation passage connected to the second lower end opening of the second blow-out guide cylinder, and the second ventilation passage and the third ventilation passage are arranged in the vicinity of the first blow-out port. It is characterized by being formed so as to be connected by 4 air passages.
The invention according to claim 4 is the ceiling-mounted air conditioner according to claim 3, wherein the first up-down wind direction plate is retracted into the fourth ventilation passage when the first air outlet is opened. It is characterized by
The invention according to claim 5 is the ceiling-embedded air conditioner according to any one of claims 1 to 4, wherein the lower guide plate is located on the first lower end opening side of the first blowout guide cylinder. A first left/right airflow direction plate is attached, and a second left/right airflow direction plate is attached to the second lower end opening side of the second blowout guide tube.
The invention according to claim 6 is the ceiling-embedded air conditioner according to claim 5, wherein the inside of the first vertical airflow direction plate is provided at a position corresponding to the first horizontal airflow direction plate of the lower guide plate. A first straightening plate is attached, and a second straightening plate is attached to a position of the lower guide plate corresponding to the second left-right airflow direction plate.
The invention according to claim 7 is the ceiling-mounted air conditioner according to any one of claims 1 to 6, wherein the main unit includes the first sirocco fan and the second sirocco fan arranged side by side. and a third blowout pipe is provided on the outside of either one of the first sirocco fan and the second sirocco fan arranged side by side, and air flows from the suction port of the decorative panel through the heat exchanger. a third sirocco fan that draws in air and blows it out from the third blowout cylinder, and a fourth blowout cylinder outside the other of the first sirocco fan and the second sirocco fan that are arranged side by side. A fourth sirocco fan that sucks air from the suction port through the heat exchanger and blows air from the fourth blowout cylinder is further provided, and has a third upper end opening and a third lower end opening inside the lower inner cover. A third blowout guide cylinder, the third upper end opening of which is connected to the third blowout cylinder of the third sirocco fan, a fourth upper end opening and a fourth lower end opening, and the fourth upper end opening of the fourth sirocco fan. A fourth blow-out guide cylinder connected to the fourth blow-out cylinder is provided, and has a second blow-out port to which a second up-down wind direction plate is attached in line with the lower surface peripheral cover, and the third blow-out guide cylinder of the third blow-out guide cylinder. 3, a first rotary plate connecting the lower end opening to the second outlet, and a third outlet to which a third up-down airflow direction plate is attached, and the fourth outlet guide tube has the fourth lower end opening connected to the third outlet. A second rotating plate connected to the outlet is provided.
The invention according to claim 8 is the ceiling-embedded air conditioner according to claim 7, wherein the first rotary plate directs the blowing direction of the air blown from the third blowing guide tube to the direction of the decorative panel. Rotate in a range of 90 degrees between the direction facing the front end and the direction facing the one outside, and the second rotating plate directs the blowing direction of the air blown from the fourth blowing guide tube to the decorative panel. It is characterized in that it rotates in a range of 90 degrees between the direction facing the front end and the direction facing the other outside.

According to the present invention, the air blown out from the first sirocco fan and passed through the first blowout guide cylinder and the air blown out from the second sirocco fan and passed through the second blowout guide cylinder are mixed by the lower guide plate. Then, it is blown out from the first outlet. For this reason, the number of air outlets is one, and the appearance can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing an installation state of a ceiling-embedded air conditioner according to an embodiment of the present invention; FIG. 2 is a perspective view of the ceiling-embedded air conditioner of FIG. 1 as viewed from below; Fig. 3 is a perspective view of the ceiling-embedded air conditioner of Fig. 2 with the decorative panel removed; FIG. 3 is an exploded perspective view of the main body unit of the present embodiment as viewed from below; It is a top perspective view of a drain pan. It is a perspective view of a reinforcing metal fitting. It is a top perspective view of a guide cylinder holder. FIG. 4 is a top perspective view of a guide plate and an up/down wind direction plate; FIG. 4 is an exploded top perspective view of the guide plate and the vertical wind direction plate; It is a partial sectional view of the undersurface of a decorative panel. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2; FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2; FIG. 12 is a sectional view taken along line CC of FIG. 11; It is a perspective view of the lower guide plate of another example. FIG. 15 is a cross-sectional view of the lower guide plate of FIG. 14;

A ceiling-mounted air conditioner 100 according to an embodiment of the present invention will be described below. As shown in FIG. 1, the ceiling-mounted air conditioner 100 is attached to the ceiling T1 of the air conditioning room R, and is connected by refrigerant pipes to an outdoor unit (not shown) installed outdoors to form a refrigerant circuit. do. The ceiling-mounted air conditioner 100 has a box-shaped main unit 200 arranged in the ceiling space T2, and a decorative panel 300 attached to the bottom surface of the main unit 200 so as to be exposed to the air conditioning room R side. An electrical component box 400 in which a control circuit is mounted is attached to the side surface of the main unit 200 .

As shown in FIG. 2, the decorative panel 300 has a rectangular shape with a front end 301 and a rear end 302 longer than a left end 303 and a right end 304 . Inside the bottom cover 370 facing the air conditioning room R shown in FIG.

The blow-out guide cylinder 310 is a third blow-out guide cylinder described in the claims, the blow-out guide cylinder 320 is a first blow-out guide cylinder, and the blow-out guide cylinder 330 is a second blow-out guide cylinder. , and the blow-out guide tube 340 similarly realizes the fourth blow-out guide tube.

The air blown out from the blow-out guide tube 310 on the left end 303 side is blown out from the blow-out port 306 of the rotary plate 380L. This rotating plate 380L can be rotated 90 degrees in the direction of arrow a from the state shown in FIG. be done. In addition, the vertical blowing direction of the wind is guided by the vertical wind direction plate 311 that rotates together with the rotary plate 380L.

The rotating plate 380L is a first rotating plate described in the claims, and the up/down wind direction plate 311 is likewise a second up/down direction plate.

The blowing direction of the air blown from the central blow-off guide cylinders 320 and 330 is guided by respective left and right airflow direction plates 392 and 393 of a lower guide plate 390 described later, and after being joined by the lower guide plate 390, the air blows in a common direction. It is blown out from the outlet 307 . The vertical blowing direction of the wind is guided by the vertical wind direction plate 321 .

The left/right wind direction plate 322 is a first left/right direction plate, the left/right direction plate 332 is a second left/right direction plate, and the up/down direction plate 321 is a first up/down direction plate. It is the realization of a board.

The air blown out from the blow-out guide tube 340 on the right end 304 side is blown out from the blow-out port 308 of the rotary plate 380R. This rotating plate 380R can be rotated 90 degrees in the direction of arrow b from the state shown in FIG. be done. In addition, the vertical blowing direction of the wind is guided by the vertical wind direction plate 341 that rotates together with the rotary plate 380R.

The rotating plate 380R is a second rotating plate described in the claims, and the up/down wind direction plate 341 is likewise a third up/down direction plate.

On the side of the rear end 302 of the lower surface cover 370 of the decorative panel 300, a laterally elongated suction port 350 is formed from the left end 303 to the right end 304. The suction port 350 is formed by a laterally elongated suction grille 360. covered.

A lower surface cover 370 of the decorative panel 300 is formed by a lower surface inner cover 371 and a lower surface outer peripheral cover 372 . The lower inner cover 371 covers the inside surrounded by the rotating plates 380L, 380R, the outlet 307, and the intake grille 360. As shown in FIG. The lower outer peripheral cover 372 covers the rotary plates 380L, 380R, the air outlets 306, 307, 308, the intake grille 360, and the lower inner cover 371. Details of the decorative panel 300 will be described later.

The outlet 306 is a second outlet, the outlet 307 is a first outlet, and the outlet 308 is a third outlet. be.

FIG. 3 shows the body unit 200 viewed from below with the decorative panel 300 removed, and FIG. 4 shows an exploded view of the body unit 200 viewed from below. The main unit 200 includes a steel plate housing 500 , a heat exchanger 600 , a fan unit 700 , a drain pan 800 and a drain pump 900 . The drain pump 900 has a suction port 910 and a discharge port 920.

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

The heat exchanger 600 has a first heat exchanger 610 and a second heat exchanger 620 housed in the housing 500 . The first heat exchanger 610 is arranged on the front plate 520 side of the housing 500 , and the second heat exchanger 620 is arranged on the rear plate 530 side. Upper ends of the first heat exchanger 610 and the second heat exchanger 620 are attached to the top plate 510 of the housing 500 . Between the left side plate 540 side of each of the first heat exchanger 610 and the second heat exchanger 620, a rotating shaft support plate 630 for supporting a rotating shaft 712 of the fan motor 710, which will be described later, is attached. Between the right side plate 550 side of each of the heat exchanger 610 and the second heat exchanger 620, a rotating shaft support plate 640 that supports another rotating shaft 713 of the fan motor 710, which will be described later, is attached.

The fan unit 700 includes a double shaft fan motor 710 fixed to a motor mounting base 711, two impellers 721 and 722 fixed to a first rotating shaft 712 of the fan motor 710, and the motor 710. It has two impellers 723 and 724 fixed to the second rotating shaft 713 and four fan casings 731-734 that individually surround the impellers 721-724. The fan casings 731 to 734 include upper surface attachment portions 731a to 734a attached to the top plate 510 of the housing 500, suction openings 731b to 734b formed on both side surfaces, and blowout cylinders formed to protrude downward. 731c to 734c, respectively.

The impeller 721 and the fan casing 731 realize the third sirocco fan described in the claims, the impeller 722 and the fan casing 732 similarly realize the first sirocco fan, and the impeller 723 and the fan casing 733 are the same. 2, the impeller 724 and the fan casing 734 similarly realize the fourth sirocco fan.

The drain pan 800 is made of a heat insulating material 810 made of polystyrene foam. In the heat insulating material 810, four blowing openings 821 to 824 are formed in a line in the left-right direction, penetrating from the upper surface 810a to the lower surface 810b. As shown in FIG. 5, the drain pan 800 has an upper surface 810a surrounded by a peripheral wall 830, and has a substantially rectangular shape with a front end 831 and a rear end 832 as long sides.

A groove 841 for receiving dew generated in the first heat exchanger 610 is formed between the front end portion 831 of the peripheral wall 830 and the blowout openings 821 to 824 on the upper surface 810a of the heat insulating material 810. A groove 842 for receiving dew generated in the second heat exchanger 620 is formed between the portion 832 and the blowing openings 821 to 824 . A groove 843 is also formed inside the right end portion 833 of the peripheral wall 830 . Furthermore, a drain tank 844 is formed inside the peripheral wall 830 at the far right end of the upper surface 810 a of the heat insulating material 810 . The groove 841 is connected to the groove 843 , and the grooves 842 and 843 are connected to the drain tank 844 .

In addition, 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 front end portion 831 of the drain pan 800, a long piece 872 corresponding to the rear end portion 832, a short piece 873 connecting the left side of the long piece 871 and the long piece 872 in FIG. It has a short piece 874 connecting the right side of 871 and long piece 872 in FIG.

The reinforcing metal fittings 870 are embedded in the heat insulating material 810 by positioning the reinforcing metal fittings 870 in advance in a mold for molding the heat insulating material 810, and then foaming the foamed polystyrene. Thereby, the reinforcing metal fitting 870 is integrated with the lower surface 810 b of the heat insulating material 810 .

The blowout guide cylinder 310 of the decorative panel 300 is formed so as to be connected to the blowout opening 821 of the drain pan 800, the blowout guide cylinder 320 is formed so as to be connected to the blowout opening 822 of the drain pan 800, and the blowout guide cylinder 330 is formed to be connected to the drain pan 800. The blowout guide cylinder 340 is formed so as to be connected to the blowout opening 823 , and the blowout guide cylinder 340 is formed so as to be connected to the blowout opening 824 of the drain pan 800 .

The blow-out guide cylinder 310 is a third blow-out guide cylinder, the blow-out guide cylinder 320 is a second blow-out guide cylinder, and the blow-out guide cylinder 330 is a second blow-out guide cylinder. The blow guide cylinder 340, which realizes the cylinder, similarly realizes the fourth blow guide cylinder.

FIG. 7 shows the guide cylinder holder 305 provided with the blowout guide cylinders 310 to 340. As shown in FIG. This guide tube holder 305 constitutes a part of the decorative panel 300 . Blow-out guide cylinders 310, 320, 330 and 340 respectively have upper end openings 310a, 320a, 330a and 340a and lower end openings 310b, 320b, 320b and 340b. 310 a 1 , 320 a 1 , 330 a 1 are spacers interposed between the blow-out guide cylinders 310 , 320 , 330 and the blow-out openings 821 , 822 , 823 of the drain pan 800 . In FIG. 7, the spacer of the blowout guide tube 340 is omitted (in a removed state). 305a is the front portion of the guide tube holder 305, and 305b is the rear portion of the guide tube holder 305. As shown in FIG.

The top opening 310a is a first top opening, the top opening 320a is a second top opening, the top opening 330a is a third top opening, Upper end opening 340a is likewise a fourth upper end opening. Further, the lower end opening 310b realizes the first lower end opening described in the claims, the lower end opening 320b similarly realizes the second lower end opening, the lower end opening 330b similarly realizes the third lower end opening, The bottom opening 340b is likewise a fourth bottom opening.

A rotating plate 380L, which communicates the lower end of the left blow guide tube 310 and the blow outlet 306, is rotatable independently of the guide tube holder 305 and the blow guide tube 310 by a motor (not shown). A rotating plate 380R that communicates the lower end of the right blow guide tube 340 with the blow outlet 308 is also rotatable independently of the guide tube holder 305 and the blow guide tube 340 by a motor (not shown). Note that FIG. 7 does not show the left rotating plate 380L and the right rotating plate 380R.

8 and 9 show the lower guide plate 390. FIG. This lower guide plate 390 is attached to the lower surface of the central blowout guide cylinders 320 and 330 in the guide cylinder holder 305 in order to mix the air blown out from the blowout guide cylinders 320 and 330 . A concave curved portion 391 is formed in the lower guide plate 390 from an upper end 390 a to a lower end 390 b that serves as the outlet 307 . The curved portion 391 is provided with a left/right airflow direction plate 322 located on the bottom surface of the blowout guide tube 320 and a left/right airflow direction plate 332 located on the bottom surface of the blowout guide tube 330 . The left/right airflow direction plate 322 and the left/right airflow direction plate 332 are rotatably mounted in the mounting hole 392 and the mounting hole 393, respectively. A vertical wind direction plate 321 is attached between the front left end 394 and the front right end 395 of the lower guide plate 390 . On the inner side 321a of the vertical airflow direction plate 321, a rectifying plate 321b for the blowout guide tube 320 is attached at a position corresponding to the horizontal airflow direction plate 322 of the lower guide plate 390. A rectifying plate 321c for the blowout guide tube 330 is attached at a corresponding position.

The rectifying plate 321b is the first rectifying plate described in the claims, and the claim plate 321c is the second rectifying plate.

Here, referring to FIGS. 10 to 12, the portion of the blow guide tube 320 will be described as a representative. In FIG. 10, the vertical airflow direction plate 321, the horizontal airflow direction plates 322 and 332, and the rectifying plates 321b and 321c are omitted, and the rectifying plates 321b and 321c are omitted in FIGS.

The lower surface cover 370 is formed by the lower surface middle cover 371 and the lower surface peripheral cover 372 as described above. The lower middle cover 371 protrudes downward from the lower peripheral cover 372 . The front portion 305a of the guide tube holder 305 is covered under the front portion 372a of the lower peripheral cover 372, and the rear portion 305b of the guide tube holder 305 and the lower guide plate 390 are covered by the lower middle cover 371.

The air outlet guide tube 320 has an upper end opening 320a connected to the air outlet tube 732c of the fan casing 732 and the air outlet opening 822 of the drain pan 800, and a curved air passage S4 between the upper end opening 320a and the lower end opening 320b. It is slanted so as to face downward on the side of 301, that is, diagonally downward to the front. The upper end 390a of the lower guide plate 390 communicates with the blow-out guide cylinders 320 and 330, and the curved air passage S5 between the upper end 390a and the lower end 390b continues to the air passage S4 and is similar to the inclination of the air passage S4. is inclined downward on the front end 301 side.

The front end 320c of the blow guide tube 320 is engaged with the rear end 372a1 of the front portion 372a of the lower peripheral cover 372. As shown in FIG. A front end 371 a of a lower inner cover 371 is engaged with a front left end 394 and a left front end 395 (see FIG. 9) on both sides of a lower end 390 b of the lower guide plate 390 . A blowout port 307 between the lower end 390b of the lower guide plate 390 and the front end 320c of the lower end opening 320b of the blowout guide cylinder 320 faces downward toward the front end 301 side of the decorative panel 300 .

The lower middle cover 371 has a flat portion 371b extending from the front end 371a toward the rear end 302 of the decorative panel 300, and a rising portion 371c extending obliquely upward from the rear end 302 of the flat portion 371b. A folded portion 371d is formed continuously on the rear end 302 side of the rising portion 371c, and a rising portion 371e rising from the rear end 302 side of the folded portion 371d is formed and extends in the direction of the rear end 302 from the rising portion 371e. A flat screw receiving portion 371f is formed. The screw receiving portion 371f is the rear end of the lower inner cover 371. As shown in FIG.

The lower inner cover 371 is attached by engaging the front end 371a with the front left end 394 and the front right end 395 (see FIG. 9) of the lower end 390b of the lower guide plate 390, and then screwing the rear screw receiving portion 371f onto the guide tube holder 305. This is done by fixing to the rear end 305b1 of the rear portion 305b from below with a screw B1.

As a result, the lower guide plate 390, a portion of the blowout guide tube 320, and the rear portion 305b of the guide tube holder 305 are covered with the lower inner cover 371 and are not visible from below. Further, the screws B1 to which the lower surface middle cover 371 is attached are attached to the suction grille 360 so that the rising portion 361a of the frame 361 of the suction grille 360 comes into contact with the rear rising portion 371e of the lower surface middle cover 372. disappear from the direction. Note that the front portion 305a of the guide tube holder 305 is covered with the front portion 372a of the lower peripheral cover 372, and likewise cannot be seen from below. As described above, the aesthetic appearance of the ceiling-mounted air conditioner 100 viewed from the bottom surface is improved.

Now, assembly of the ceiling-mounted air conditioner 100 will be described. First, the housing 500 of the main unit 200 is placed on the assembly table with the top plate 510 side down, and the assembled first heat exchanger 610 and second heat exchanger 620 are screwed to the inside of the top plate 510. do.

Next, after aligning the assembled fan unit 700 between the first heat exchanger 610 and the second heat exchanger 620, the motor mount 711 of the fan motor 710 is screwed to the top panel 510, A first rotary shaft 712 of the fan motor 710 is supported by a rotary shaft support plate 630 , and a second rotary shaft 713 is supported by a rotary shaft support plate 640 . Further, the upper mounting portions 731a to 734a of the fan casings 731 to 734 are screwed to the top plate 510. As shown in FIG. Further, rotating shaft support plates 630 and 640 are attached to the first heat exchanger 610 and the second heat exchanger 620, respectively. Then, the drain pump 900 is attached inside the right side plate 550 of the housing 500, and its discharge port 920 is connected to the drain pipe 551 shown in FIGS.

Next, after aligning the groove 841 of the upper surface 810 a of the drain pan 800 with the lower portion of the first heat exchanger 610 and aligning the groove 842 with the lower portion of the second heat exchanger 620 , this drain pan 800 is attached to the housing 500 . 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 by pushing in from the bottom to the inside.

As described above, the blowout cylinders 731c to 734c of the four fan casings 731 to 734 of the fan unit 700 enter into the upper surface 810a side of the four blowout openings 821 to 824 of the drain pan 800, and the blowout openings 821 to 824 and the blowout cylinders 731c to 734c are individually communicated. Also, the suction port 910 of the drain pump 900 is located in the drain tank 844 of the drain pan 800 .

Since the assembled main unit 200 is packed separately from the decorative panel 300, when installing the ceiling-mounted air conditioner 100, the packing is first unpacked, and then it is embedded in the ceiling space T2. The main unit 200 is hung from a plurality of hanging bolts by mounting metal fittings 560 and installed in the ceiling space T2. Then, the decorative panel 300 is attached from the air conditioning room R side shown in FIG.

At this time, the upper end opening 322 of the blowout guide cylinder 320 of the decorative panel 300 is inserted into the blowout opening 822 from the lower surface 810b of the drain pan 800 to communicate with the blowout cylinder 732c of the fan casing 732 . Similarly, the remaining blow-out guide cylinders 310, 330, 340 are inserted into the blow-out openings 821, 823, 824 of the drain pan 800 and communicated with the blow-out cylinders 731c, 733c, 734c of the fan casings 731, 733, 734, respectively. Then, the decorative panel 300 is screwed to the housing 500 of the main unit 200, and a refrigerant pipe, a power line, a signal line, and the like (not shown) are connected.

Ceiling-mounted air conditioner 100 assembled as described above includes, as shown in FIG. Ventilation path S2 between housing 500 and front plate 520 communicates with ventilation path S3 between lower surface 810b of drain pan 800 and decorative panel 300. As shown in FIG. Blow-out guide cylinders 310 to 340 are arranged in the air passage S3.

As described above, in the ceiling-embedded air conditioner 100 of the present embodiment, the air sucked from the suction port 350 of the decorative panel 300 reaches the second heat exchanger 620 through the air passage S1. Furthermore, the air sucked from the suction port 350 of the decorative panel 300 reaches the first heat exchanger 610 on the front side through the air passages S3 and S2 in sequence. Therefore, even if the first heat exchanger 610 is arranged at a location farther from the suction port 350 than the second heat exchanger 620 in order to increase the heat exchange capacity, the first heat exchanger 61 is sufficiently A large amount of air can be pumped in.

In addition, a common ventilation path S5 that is continuous with the ventilation path S4 of the blow-out guide tube 320 and the ventilation path (not shown) of the blow-out guide passage 330 is provided so that the suction port 307 of the lower guide plate 390 faces obliquely forward and downward. curved and sloping. Therefore, the flow of air blown out by the rotation of the impellers 722, 332 is less likely to be resisted by the blow-out guide cylinders 320, 330, and the reaching distance of the blown air flow to the front of the ceiling-mounted air conditioner 100 is extended. becomes possible. In addition, the ventilation path S5 implement|achieves the 1st ventilation path as described in a claim.

Also, the air blown out from the blow-out guide cylinders 320 and 330 is mixed by the lower guide plate 390 and then blown out from the blow-out port 307 . There is one air outlet 307 and one up-down wind direction plate 211 attached thereto. Therefore, compared to the case where two outlets are provided according to the outlet guide cylinders 320 and 330, the appearance is simplified, and the appearance around the outlets can be improved.

In addition, since the left rotating plate 380L rotates 90 degrees in the direction of arrow a from the state shown in FIG. can be directed to Also, since the right rotating plate 380R rotates 90 degrees in the direction of arrow b from the state shown in FIG. be able to. Therefore, the air blown out from the left blow-out port 306 and the right blow-out port 308 joins the air blown out from the center blow-out port 307 to the center. It is possible to expand the spread of the air in the left and right direction, and shorten the time required for air conditioning until the temperature of the entire room becomes uniform.

FIG. 14 shows another example of the lower guide plate 390A. In the lower guide plate 390A, the air passage S5 continuing to the upper end opening 390a shown in FIGS. 8 and 9 is separated into air passages S6 and S7. The upper end opening 390a1 connects the ventilation passage S6 to the first blowout guide cylinder 320, and the upper end opening 390a2 connects the ventilation passage S7 to the second blowout guide cylinder 330. As shown in FIG. The ventilation path S6 and the ventilation path S7 are connected by a ventilation path S8 formed on the first outlet 307 side. The ventilation path S8 is formed by a concave wall 390c1. Therefore, the air blown into the air passage 8 is separated into the air passages S6 and S7, and part of the air blown into the air passages S6 and S7 is mixed by the air passage S8. Therefore, the lateral distribution of the air flow blown out from the blow-out port 307 can be approximately the same.

The ventilation path S6 is a second ventilation path, the ventilation path S7 is a third ventilation path, and the ventilation path S8 is a fourth ventilation path. be.

The vertical wind direction plate 321 opens and closes the air outlet 307 side, and determines the vertical direction of air blowing according to the degree of opening and closing. When the vertical wind direction plate 321 is open, it is in the state shown in FIG. 15(a), but when it is closed, it retreats into the ventilation passage S8 as shown in FIG. 15(b).

100: Ceiling-embedded air conditioner 200: Main unit 300: Decorative panel 305: Guide tube holder 306-308: Blow outlet 310-340: Blow-out guide tube 310b, 320b, 340b: Lower end opening 322, 332: left/right wind direction plate, 323: guide tube, 311, 321, 341: up/down direction plate, 350: suction port, 360: suction grille, 370: bottom cover, 371: bottom middle cover, 372: bottom peripheral cover, 380L, 380R: Rotating plate, 390, 390A: Lower guide plate 400: Electrical component box 500: Housing, 510: Top plate, 520: Front plate, 530: Rear plate, 540: Left side plate, 550: Right side plate, 560: Mounting Metal fittings 551: Hose 600: Heat exchanger 610, 620: Heat exchanger 630, 640: Rotating shaft support plate 700: Fan unit 710: Fan motor 721 to 724: Impeller 731 to 734: Fan casing , 731c to 734c: blowout pipe 800: drain pan 810: heat insulating material 821 to 824: blowout opening 841 to 843: groove 844: drain tank 870: reinforcing metal fitting 900: drain pump

Claims (8)

A ceiling-embedded air conditioner comprising a main unit and a decorative panel attached to the bottom surface of the main unit having a suction port covered with a suction grill and a first outlet,
The main unit has a box-shaped housing, a heat exchanger arranged inside the housing, and a first blowout cylinder, and is arranged inside the housing. A first sirocco fan that sucks air through the heat exchanger and blows it out from the first blowout cylinder, and a second blowout cylinder that is arranged inside the housing, and the heat is sent from the suction port of the decorative panel. A second sirocco fan that sucks air through an exchanger and blows it out from the second blowout cylinder,
The decorative panel includes a lower surface cover having a lower surface inner cover in which the first outlet is formed and a lower surface surrounding cover surrounding the lower surface inner cover.
a first blowout guide tube having a first upper end opening and a first lower end opening, the first blowout guide tube of the first sirocco fan being connected to the first blowout tube of the first sirocco fan;
a second blowout guide tube having a second upper end opening and a second lower end opening, the second blowout guide tube of the second sirocco fan being connected to the second blowout tube;
A lower guide plate having an upper end and a lower end, wherein the upper end is commonly connected to the first lower end opening of the first blowout guide tube and the second lower end opening of the second blowout guide tube, and the lower end is connected to the lower surface. The first air outlet is formed so as to protrude downward from the surrounding cover, the first ventilation passage is formed continuously from the upper end to the lower end, and the first ventilation passage extends downward on the front end side of the decorative panel. and a lower guide plate that curves like
A ceiling-embedded air conditioner, wherein a first vertical wind direction plate is mounted inside the lower end of the lower guide plate. In the ceiling-mounted air conditioner according to claim 1,
The lower guide plate has a first left-right airflow direction plate attached to the first lower end opening side of the first blowout guide cylinder in the first ventilation passage, and the second airflow direction plate of the second blowout guide cylinder in the first ventilation passage. 2. A ceiling-embedded air conditioner, characterized in that a second left-right airflow direction plate is attached to the lower end opening side. In the ceiling-mounted air conditioner according to claim 1,
The lower guide plate has a second ventilation passage in which the first ventilation passage connects to the first lower end opening of the first blowout guide tube, and a third ventilation passage in which the second blowout guide tube connects to the second bottom opening of the second blowout guide tube. The ceiling-embedded air conditioner is characterized in that the second ventilation passage and the third ventilation passage are connected by a fourth ventilation passage in the vicinity of the first outlet. machine. In the ceiling-mounted air conditioner according to claim 3,
The ceiling-embedded air conditioner, wherein the first vertical wind direction plate retracts into the fourth ventilation passage when the first air outlet is opened. In the ceiling-mounted air conditioner according to any one of claims 1 to 4,
In the lower guide plate, a first left/right airflow direction plate is attached to the first lower end opening side of the first blowout guide tube, and a second left/right airflow direction plate is attached to the second lower end opening side of the second blowout guide tube. A ceiling-embedded air conditioner characterized by: In the ceiling-mounted air conditioner according to claim 5,
Inside the first vertical airflow direction plate, a first straightening plate is attached at a position corresponding to the first horizontal airflow direction plate of the lower guide plate, and a position corresponding to the second horizontal airflow direction plate of the lower guide plate. A ceiling-embedded air conditioner, characterized in that a second rectifying plate is attached to the . In the ceiling-mounted air conditioner according to any one of claims 1 to 6,
The main unit has the first sirocco fan and the second sirocco fan arranged side by side, and a third blowout pipe outside one of the first sirocco fan and the second sirocco fan arranged side by side. a third sirocco fan that sucks air from the suction port of the decorative panel via the heat exchanger and blows air from the third blowout cylinder; A fourth sirocco fan, which has a fourth blowout cylinder on the outside of either one of the fans, sucks air from the intake port of the decorative panel via the heat exchanger, and blows out the air from the fourth blowout cylinder;
a third blowout guide tube having a third upper end opening and a third lower end opening, the third upper end opening being connected to the third blowout tube of the third sirocco fan, and a fourth upper end opening inside the lower inner cover. and a fourth blowout guide tube having a fourth lower end opening, the fourth upper end opening being connected to the fourth blowout tube of the fourth sirocco fan,
a first rotating plate that is aligned with the lower surface surrounding cover and has a second outlet to which a second up-down airflow direction plate is attached and that connects the third lower end opening of the third outlet guide tube to the second outlet; a second rotary plate having a third outlet to which a third vertical wind direction plate is attached and connecting the fourth lower end opening of the fourth outlet guide cylinder to the third outlet;
A ceiling-embedded air conditioner characterized by: In the ceiling-mounted air conditioner according to claim 7,
The first rotating plate rotates the blowing direction of the air blown from the third blowing guide tube in a range of 90 degrees between the direction facing the front end of the decorative panel and the direction facing the one outside,
The second rotating plate rotates the blowing direction of the air blown from the fourth blowing guide cylinder within a range of 90 degrees between the direction facing the front end of the decorative panel and the direction facing the other outside. A ceiling-embedded air conditioner characterized by:

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