WO2013047240A1

WO2013047240A1 - Ceiling-embedded air-conditioner

Info

Publication number: WO2013047240A1
Application number: PCT/JP2012/073654
Authority: WO
Inventors: 清一小澤; 耕平引田; 森　大樹; 貴一林; 小倉　信博; 古賀　誠一; 正弘青野
Original assignee: 三洋電機株式会社
Priority date: 2011-09-30
Filing date: 2012-09-14
Publication date: 2013-04-04
Also published as: JPWO2013047240A1; JP6078925B2

Abstract

Provided is a ceiling-embedded air-conditioner having a simple configuration and being capable of reducing blower noise during operation. Provided inside a housing (1) are a blower (9), a substantially pentagonal heat exchanger (11) arranged so as to surround the blower (9), and a rectification plate (41), one end (41A) of which being attached to a suction side of linear parts (11A, 11B, 11C, 11E) of the heat exchanger (11), and the other end (41B) extending toward the blower (9). The rectification plate (41) is provided with an uneven part in which a plurality of recesses and projections are formed continuously in the longitudinal direction of the other end (41B).

Description

Embedded ceiling air conditioner

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

Generally, one end is attached to the suction side of the air blower in the housing, the polygonal heat exchanger disposed so as to surround the air blower, and the linear shape portion of the heat exchanger, and the other end extends to the air blower side. A ceiling-embedded air conditioner including a current plate is known (see, for example, Patent Document 1). In this type of air conditioner, the indoor air sucked into the heat exchanger via the blower flows through the ventilation path so as to get over the current plate, and flows out from the suction side of the heat exchanger to the outlet side. . For this reason, when the current plate becomes an appropriate resistance against the air flow, the pressure in the space between the current plates is made uniform, and the generation of eddy currents in the space, particularly the corners of the heat exchanger ( Since the generation of eddy currents at the corners is suppressed, noise (wind noise) during operation of the blower can be suppressed.

Japanese Patent Laid-Open No. 5-126351

By the way, in recent years, there is a high demand for quietness of the indoor environment, and a configuration for further reducing noise during operation of the blower is being sought.
SUMMARY OF THE INVENTION An object of the present invention is to provide a ceiling-embedded air conditioner that solves the above-described problems of the prior art and can reduce the noise of the blower during operation with a simple configuration.

In order to solve the above problems, the present invention includes a blower in a casing, a polygonal heat exchanger disposed so as to surround the blower, and one end attached to the suction side of the linear portion of the heat exchanger. In the ceiling-embedded air conditioner that includes a rectifying plate having the other end extending toward the blower, the rectifying plate has a plurality of concavo-convex portions formed continuously in a longitudinal direction of the other end. Features.

In this configuration, the concavo-convex portion may be formed in a triangular shape having an apex angle of approximately a right angle. The rectifying plate may be curved in a short direction, and the uneven portion may be positioned upstream with respect to the air flow from the blower to the heat exchanger. Moreover, the said baffle plate may be arrange | positioned so that the said uneven | corrugated | grooved part may become substantially parallel to the linear shape part of the said heat exchanger. Moreover, the said baffle plate is good also as a structure attached to the said linear shape part in the position close | similar to the corner | angular part of the said heat exchanger located in the air downstream side.

According to the present invention, a straightening portion of the heat exchanger has one end attached to the suction side and the other end provided with a current plate extending to the blower side, and the other end of the current plate has a plurality of uneven portions in the longitudinal direction. Since the air flow is dispersed by this uneven portion, the wind speed that has passed through the rectifying plate is made substantially uniform, and the generation of vortex on the suction side of the heat exchanger is suppressed. The noise of the blower at the time can be reduced.

1 is a side sectional view showing a ceiling-embedded air conditioner according to a first embodiment. It is a figure which shows the ceiling panel type | mold air conditioning apparatus of the state which removed the decorative panel and the drain pan from the downward direction. FIG. 3 is a sectional view taken along line BB in FIG. A is a top view of the current plate, B is a front view, and C is a right side view. It is the table | surface which compared the noise value of the structure of 1st Embodiment, and the conventional structure. It is a figure which shows the state which removed the decorative panel, the drain pan, and the air blower regarding the ceiling embedded type air conditioning apparatus which concerns on 2nd Embodiment from the downward direction. It is a figure which shows the ceiling embedded type air conditioning apparatus of the state which removed the decorative panel from the downward direction. It is a partial expansion perspective view which shows an electrical equipment box and a standing wall. A is a schematic cross-sectional view showing the wiring portion in a state where the lid is closed, and B is a schematic cross-sectional view showing the wiring portion in a state where the lid is open.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a side sectional view showing a ceiling-embedded air conditioner according to a first embodiment.
The ceiling-embedded air conditioner 100 has a box-shaped housing 1 made of sheet metal, and a plurality of suspension fittings 2A (see FIG. 2) are provided at four corners of the housing 1 (in this embodiment, 4). One) is provided. A suspension bolt 2 fixed to the ceiling surface 110 is fixed to each suspension bracket 2A by a nut (not shown), and the ceiling-embedded air conditioner 100 is connected to the ceiling surface 110 via the suspension bolt 2. It is installed suspended.

A heat insulating material 3 made of styrene foam is disposed almost entirely inside the housing 1, and a blower 9 and a heat exchanger 11 are accommodated inside the heat insulating material 3. The blower 9 includes a fan motor 5 having a shaft disposed downward, and a turbo fan 7 rotatably attached to the shaft of the fan motor 5, and a ventilation path 8 is formed around the turbo fan 7. ing. The heat exchanger 11 is a fin-and-tube heat exchanger formed in a polygonal shape in plan view, and is disposed so as to surround the blower 9.
Below the heat exchanger 11, a drain pan 13 made of styrene foam is disposed so as to cover the lower surface of the heat exchanger 11. A polygonal suction opening 32 is opened at the center of the drain pan 13, and the suction portion of the blower 9 faces the suction opening 32. Further, a blow-off opening 33 for allowing the exhaust of the blower 9 that has passed through the heat exchanger 11 to pass is formed in the peripheral portion of the drain pan 13. A nozzle 14 for guiding the air in the conditioned room that has passed through the suction opening 32 to the blower 9 is attached to the upper portion of the suction opening 32. The nozzle 14 has a substantially circular opening 15 formed smaller than the suction opening 32, and is fixed to the drain pan 13 using a plurality of screws.

A decorative panel 21 is attached to the lower surface of the housing 1 with screws (not shown) or the like. The decorative panel 21 is disposed on the ceiling plate 112 provided below the ceiling surface 110 via the ceiling back space 111 and exposed to the conditioned room. The decorative panel 21 is formed with a suction port 22 for sucking in air in the conditioned room and an outlet 23 for blowing out conditioned air that has passed through the heat exchanger 11 into the conditioned room. A filter 25 is mounted inside the suction port 22.
The ceiling-embedded air conditioner 100 allows a refrigerant supplied from an outdoor unit (not shown) to pass through the heat exchanger 11 so that the heat exchanger 11 functions as an evaporator or a condenser. The ceiling-embedded air conditioner 100 sucks room air in the conditioned room from the suction port 22 through the operation of the blower 9, cleans it with the filter 25, and then heats the room air through the suction opening 32 and the nozzle 14. It is cooled or heated through the exchanger 11 to obtain conditioned air. The ceiling-embedded air conditioner 100 blows conditioned air from the blowout opening 23 to the conditioned room through the blowout opening 33 and cools or heats the conditioned room by the operation of the blower 9.

2 is a view showing the ceiling-embedded air conditioner 100 from which the decorative panel 21 and the drain pan 13 are removed from below, and FIG. 3 is a cross-sectional view taken along the line BB of FIG. 2 and 3 show a state in which the top and bottom are reversed.
As shown in FIG. 2, the heat exchanger 11 is bent into a substantially pentagonal shape in accordance with the shape of the housing 1, and has five linear shape portions (sides) 11 A in order from the refrigerant inlet / outlet side end portion 11 K. , 11B, 11C, 11D, and 11E, and

corner portions

12A, 12B, 12C, and 12D provided between the linear shape portions. In the heat exchanger 11, the refrigerant inlet / outlet side end portion 11K, which is a bending start position, and the other end 11L, which is a bending end position, are connected via a tube plate 11M. In the present embodiment, since the

straight shape portions

11A and 11E are bent and connected to each other by the tube plate 11M, the tube plate 11M also functions as a corner portion. In addition, the code | symbol 16 in FIG. 2 is a drain pump.

Further, in this embodiment, as shown in FIG. 2, the straight shape portions 11 A, 11 B, 11 C, and 11 E on the suction side of the heat exchanger 11 are respectively arranged on the inner side, that is, on the turbo fan 7 side of the blower 9. 41 is attached. These rectifying plates 41 extend along the height direction of the heat exchanger 11 and have

corners

12A, 12B, 12D on the downstream side with respect to the air flow in the ventilation path 8 indicated by an arrow X in the figure, and It is attached to each

linear shape part

11B, 11C, 11E, 11A at a position close to the tube plate 11M. In this way, by attaching the rectifying plate 41 to each linear shape portion at a position close to the corner portion, the turbo fan 7 and the heat exchanger 11 can be attached to a wide distance, and at each corner portion. The generation of vortex can be suppressed, and the noise generated from the blower 9 can be greatly attenuated.

The rectifying plate 41 is formed to bend in the short direction, one end 41A is fixed to the suction side of the heat exchanger 11, and the other end 41B is arranged to be located upstream with respect to the air flow described above. ing. In this configuration, since the curved concave surface side is the upstream side of the air, the rectifying plate 41 becomes a resistance, and the wind speed between the rectifying

plates

41 and 41 is made uniform.
Specifically, as shown in FIG. 3, the rectifying plate 41 is provided with a fork-shaped holder (fixed portion) 42 at one end, and by fitting the holder 42 into the tube 18 of the heat exchanger 11. It is attached to the suction side of the heat exchanger 11. Further, the rectifying plate 41 is formed such that the length in the longitudinal direction is at least larger than the height of the discharge port 7A of the turbofan 7, and the air blown from the discharge port 7A is rectified by the rectifying plate 41.

FIG. 4 is a three-sided view showing the rectifying plate 41, A is a top view of the rectifying plate 41, B is a front view, and C is a right side view.
In the present embodiment, the rectifying plate 41 is a member curved with a radius of curvature r as shown in FIG. 4A, and the holder 42 is spaced apart in the longitudinal direction on the one end 41A side as shown in FIG. 4B. A plurality (three) are provided. In addition, on the other end 41B side, an uneven portion 43 is formed in which a plurality of uneven portions are continuously formed in the longitudinal direction. The concave-convex portion 43 is formed by continuously forming a triangular concave portion 43A and a convex portion 43B, and the apex angle R of the convex portion 43B is set to a substantially right angle (90 °). Further, the height h of the convex portion 43B is set to about 1/3 of the projection distance L of the rectifying plate 41 as shown in FIG. 4C.
In this configuration, since the triangular uneven portion 43 can be provided larger than the height in the longitudinal direction of the rectifying plate 41, the air flow is dispersed by the edges of the concavo-convex portion 43, thereby causing the rectifying plate 41. The wind speed that has passed through is made substantially uniform. Thereby, generation | occurrence | production of the vortex | eddy_current in the said corner | angular part of the heat exchanger 11 can be suppressed, and the noise which generate | occur | produces from the air blower 9 can be attenuate | damped significantly.
Moreover, in this embodiment, the uneven | corrugated | grooved part 43 formed in the other end 41B of the baffle plate 41 is arrange | positioned so that it may become substantially parallel with the

linear shape part

11A, 11B, 11C, 11E of the heat exchanger 11, respectively. . According to this, it is possible to prevent the rectifying plate 41 from becoming excessive resistance when passing through the rectifying plate 41, and to suppress the generation of noise in the rectifying plate 41.

FIG. 5 is a diagram comparing the noise value of the ceiling-embedded air conditioner 100 of the present embodiment provided with the rectifying plate 41 and the noise value of the conventional air conditioner. In this configuration, the conventional configuration is compared with that described in JP-A-5-126351. Specifically, the noise values in the steepest wind (revolution number A), steep wind (revolution number B), strong wind (revolution number C), weak wind (revolution number D), and light wind (revolution number E) are respectively shown. We measured and compared these noise values for each air volume. In addition, the rotation speed of the air blower 9 in each air volume satisfies the rotation speed A> the rotation speed B> the rotation speed C> the rotation speed D> the rotation speed E.
As is clear from FIG. 5, in the steep wind (rotation speed A) in which the rotation speed of the blower 9 (turbo fan 7) is the maximum rotation speed, no change in the noise value was observed. In the number B), the noise value began to decrease by 0.7 (dB) compared to the conventional configuration, and in the strong wind (number of revolutions C), weak wind (number of revolutions D) and light wind (number of revolutions E), Compared to the conventional configuration, the noise values were reduced by 0.3 (dB), 0.4 (dB), and 0.8 (dB), respectively.
Thus, in the state of the steepest wind (the rotational speed of the blower 9 is the highest value), a decrease in the noise value was not seen, but at any rotational speed where the rotational speed of the blower 9 is less than the highest value, The noise level decreased. As described above, the uneven flow 43 provided on the other end 41B of the rectifying plate 41 causes the flow of the wind that flows along the rectifying plate 41 to flow at the other end 41B of the rectifying plate 41 by the concave 43A and the convex 43B. As a result, it is assumed that the wind speed is substantially uniform and the noise is reduced as a result.

As described above, according to the present embodiment, the blower 9 in the housing 1, the substantially pentagonal heat exchanger 11 disposed so as to surround the blower 9, and the straight line of the heat exchanger 11. One end 41A is attached to the suction side of the

shape portions

11A, 11B, 11C, and 11E, and the other end 41B includes a rectifying plate 41 extending to the blower 9 side. The rectifying plate 41 includes a plurality of rectifying plates in the longitudinal direction of the other end 41B. Since the concave portion 43A and the convex portion 43B are provided with the concavo-convex portion 43 formed continuously, the flow of air is dispersed by the edges of the concavo-convex portion 43 so that the wind speed passing through the rectifying plate 41 is substantially uniform. . Thereby, generation | occurrence | production of the vortex | eddy_current in the corner | angular part of the heat exchanger 11 can be suppressed, and the noise which generate | occur | produces from the air blower 9 can be attenuate | damped significantly.

Moreover, according to this embodiment, since the uneven | corrugated | grooved part 43 is formed in the triangle shape whose apex angle is a substantially right angle, the distance of the edge of the uneven | corrugated | grooved part 43 can be ensured large, and it contacts with air The effect of dispersing can be enhanced.

In addition, according to the present embodiment, the rectifying plate 41 is curved in the short direction, and the concavo-convex portion 43 is located on the upstream side with respect to the air flow from the blower 9 to the heat exchanger 11. Since the curved concave surface side becomes the upstream side of the air, the rectifying plate 41 becomes a resistance, and the wind speed between the rectifying

plates

41 and 41 is made uniform.

Further, according to the present embodiment, since the rectifying plate 41 is arranged so that the uneven portion 43 is substantially parallel to the linear shape portion of the heat exchanger 11, this rectifying plate 41 passes through the rectifying plate 41. It is possible to prevent the plate 41 from becoming excessive resistance, and to suppress the generation of noise at the rectifying plate 41.

Further, according to the present embodiment, the straightening plate 41 is provided in the

linear shape portions

11B, 11C, 11E, and 11A at positions close to 12A, 12B, and 12D of the heat exchanger 11 and the tube plate 11M that are located on the air downstream side. Therefore, the turbo fan 7 and the heat exchanger 11 can be attached to a wide distance, and the generation of vortex at the

corners

12A, 12B, 12D can be suppressed. Noise can be greatly attenuated.

However, the above embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention. In this embodiment, although the uneven | corrugated | grooved part 43 has been arrange | positioned so that it may be located in the upstream with respect to the air flow from the air blower 9 to the heat exchanger 11, this uneven | corrugated | grooved part 43 may be located in the downstream.
Further, in the present embodiment, the concavo-convex portion 43 of the rectifying plate 41 has a triangular shape with an apex angle of approximately a right angle, but is not limited thereto, and may be, for example, a rectangular shape or a semicircular arc shape.

[Second Embodiment]
Conventionally, as shown in JP-A-2004-93006, a blower, a heat exchanger, and a drain pan that covers the lower surface of the heat exchanger are housed in a housing, and a decorative panel is attached to the lower surface of the housing. A ceiling-embedded air conditioner having an electrical box between the drain pan and the drain pan is known. In this type of air conditioner, a suction hole is formed at a substantially central portion of the drain pan so that the suction port of the blower faces, and a hole portion that leads out the lead wire of the blower to the lower side of the drain pan is formed around the suction hole. The lead wire drawn downward using this hole was connected to the electrical box.

However, in the conventional configuration, the lead wire is routed along the lower surface of the drain pan, so that, for example, a serviceman accidentally touches the work with the decorative panel removed, and the lead wire is broken. There were cases where problems occurred. On the other hand, since the lead wire is routed after the drain pan and the electrical equipment box are assembled and connected to the electrical equipment box, it is desirable to facilitate the work of routing the lead wire at the time of connection.
Therefore, the object of the invention according to the second embodiment is to solve the above-mentioned problems of the prior art, easily lead the lead wire and connect it to the electrical box, and reliably prevent the lead wire from being touched. An object of the present invention is to provide a ceiling-embedded air conditioner.

In order to solve the above problems, the present invention accommodates a blower, a heat exchanger, and a drain pan that covers a lower surface of the heat exchanger in a housing, a decorative panel is attached to the lower surface of the housing, and the decorative panel, the drain pan, In the ceiling-embedded air conditioner provided with an electrical box between them, a standing wall facing the side plate of the electrical box is formed on the lower surface of the drain pan, and the electrical box is connected to the gap between the standing wall and the side plate from the blower. A lead wire extending in the direction is drawn, and at least a part of the gap is covered with a lid portion of the electrical box.

In this configuration, the distance between the edge of the lid and the tip of the standing wall may be shorter than the thickness of the lead wire. Further, the standing wall may include a curved portion that widens the width of the gap as compared with other positions at a position facing the lead wire drawing hole of the side plate of the electrical equipment box.

According to the present invention, the standing wall facing the side plate of the electrical box is formed on the lower surface of the drain pan, and the lead wire extending from the blower to the electrical box is routed in the gap between the standing wall and the side plate. Can be connected to. In addition, since at least a part of the gap is covered with the lid of the electrical box, the lead wire is exposed in the space surrounded by the standing wall, the side plate, and the lid, so that the lead wire is exposed. Is prevented, and the lead wire is reliably prevented from touching.

The ceiling-embedded air conditioner 200 according to the second embodiment is suspended from the ceiling surface 110 in the same manner as the ceiling-embedded air conditioner 100 according to the first embodiment. For this reason, regarding the ceiling-embedded air conditioner 200, the same configuration (FIG. 1) as that of the ceiling-embedded air conditioner 100 is denoted by the same reference numeral, and description thereof is omitted.

FIG. 6 is a view showing the ceiling-embedded air conditioner 200 with the decorative panel 21, the drain pan 13, and the blower 9 removed from below, and FIG. 7 shows the ceiling embedded with the decorative panel 21 removed. It is a figure which shows the type | mold air conditioning apparatus 200 from the downward direction.
The housing 1 includes four side walls 1A to 1D as shown in FIG. Separate side walls 1E to 1H are interposed between the side walls 1A to 1D, respectively, and these side walls 1A to 1H form a substantially octagonal frame as a whole.
The heat exchanger 11 is bent into a substantially pentagonal shape in accordance with the shape of the housing 1, and has five sides (linearly shaped portions) 11A, 11B, 11C, 11D, in order from the refrigerant inlet / outlet end portion 11K. 11E. These four

sides

11A, 11B, 11C, and 11E extend substantially in parallel to the four

side walls

1A, 1B, 1C, and 1D of the housing 1, and the remaining one side 11D extends to the side wall 1E of the housing 1. Correspondingly, it protrudes slightly to the center side of the housing 1. In the heat exchanger 11, the refrigerant inlet / outlet side end portion 11K, which is a bending start position, and the other end 11L, which is a bending end position, are connected via a tube plate 11M.

As shown in FIG. 7, the drain pan 13 is a member that receives the drain falling from the heat exchanger 11, and is disposed in contact with the inner surfaces of the side walls 1 A to 1 E of the housing 1. The drain pan 13 is provided with a suction opening 32 opened substantially in the center, and the suction opening 32 is formed in a substantially hexagonal shape in plan view in accordance with the shapes of the sides 11A to 11E of the heat exchanger 11 and the tube plate 11M. ing.
Between the drain pan 13 and the decorative panel 21 (see FIG. 1), an electrical box 140 that houses a substrate for controlling the blower 9 and the like is disposed. The electrical box 140 uses a plurality of screws (not shown). It is fixed to the drain pan 13. The electrical box 140 is arranged in the radial direction outside the opening 15 of the nozzle 14 and close to the inside of the suction opening 32. For this reason, the electrical equipment box 140 can be arranged at a position that does not overlap the suction portion of the blower 9 in plan view, and the intake resistance can be reduced while the electrical equipment box 140 is placed in the vicinity of the blower 9.

In the electrical box 140, a lid (lid) 142 that closes an opening (not shown) of the electrical box main body 141 is attached to the electrical box main body 141 whose one side on the lower side of the ceiling-embedded air conditioner 100 is open. Configured. The electrical box main body 141 and the lid 142 are formed in a substantially trapezoidal shape in plan view according to the shape of the side 11E of the heat exchanger 11 and the tube plate 11M by bending a thin plate using a flame retardant material such as metal. Has been.
A pair of notches 142A extending along the side 11E is formed at the edge of the lid 142 on the side 11E side of the heat exchanger 11. In the electrical box main body 141, a flange 141A is formed at a position corresponding to the notch 142A of the lid 142. The lid 142 is detachably fixed to the electrical box main body 141 by inserting the flange 141A of the electrical box main body 141 into the notch 142A and fixing with the pair of screws 143.

Incidentally, a lead wire (see FIG. 9) extending from the fan motor 5 of the blower 9 is connected to the electrical equipment box 140. The lead wire is drawn downward through a drawing hole 50 formed around the opening 15 of the drain pan 13, drawn around the lower surface of the drain pan 13, and then fixed to the lower surface of the drain pan 13. Connected to the box 140.
Since this lead wire is routed along the lower surface of the drain pan 13, when the decorative panel 21 is removed, the lead wire is exposed below the drain pan 13, so that, for example, a serviceman accidentally operates during work. It may be touched, and problems such as breakage of the lead wire may occur.

For this reason, in this configuration, as shown in FIG. 8, a standing wall 51 that faces the side plate 145 of the electrical box main body 141 is formed on the lower surface of the drain pan 13, and the lead wire is wired in the gap between the standing wall 51 and the side plate 145. A wiring portion 146 is provided. The standing wall 51 is formed integrally with the flat portion 16 of the nozzle 14, and the standing wall 51 can be easily formed at a specified position by fixing the nozzle 14 to the drain pan 13. In FIG. 8 and FIGS. 9A and 9B described later, a state in which the top and bottom are reversed is shown.
As shown in FIG. 7, the flat portion 16 of the nozzle 14 connected to the standing wall 51 is formed so as to overlap the drawing hole 50 in a plan view. In this case, the drain pan 13 is formed so that the periphery of the lead-in hole 50 is lower than the others, and the lead-in hole 50 and the wiring part 146 are connected to the gap between the low part and the flat part 16 as shown in FIG. 9A. A connecting portion 147 is formed. For this reason, the lead wire 60 drawn out from the lead-in hole 50 can be guided to the wiring part 146 without being exposed to the outside by passing through the connecting part 147.

Further, in this configuration, a lid 142 of the electrical box 140 extends below the wiring portion 146 (upward in the drawing), and an edge 142B of the lid 142 partially extends the wiring portion 146 in the width direction. It is arranged to cover. Specifically, the edge 142B of the lid 142 is bent upward, and the edge 142B is disposed between the standing wall 51 and the side plate 145, as shown in FIG. 9A. Here, since the distance L1 between the edge 142B of the lid 142 and the lower end (tip) 51A of the standing wall 51 is shorter than the thickness D of the lead wire 60, the lead wire 60 is connected to the standing wall 51. By wiring in the space surrounded by the side plate 145 and the lid 142, the lead wire 60 is prevented from being exposed, and the lead wire 60 is reliably prevented from touching. Further, since the lead wire 60 is formed thinner than the finger, it is possible to prevent the lead wire 60 from being pulled out by inserting a finger from the gap between the edge portion 142B of the lid 142 and the lower end portion 51A of the standing wall 51. The

Further, in the state in which the lid 142 is opened, as shown in FIG. 9B, all the wiring portions 146 between the standing wall 51 and the side plate 145 are opened, so that the lead wire 60 can be easily routed around the wiring portions 146. Therefore, the wiring work can be facilitated.

Furthermore, in the present embodiment, the standing wall 51 includes a curved portion 51B that swells from the other portion to the blower 9 side and widens the gap of the wiring portion 146 at a position facing the lead wire drawing hole 145A formed in the side plate 145. . The bent portion 51B is formed in a shape that guides the lead wire 60 when the lead wire 60 is bent and connected to the electrical box 140, and the lead wire 60 is gently bent when the connection work is performed. Therefore, it is possible to prevent an excessive load from being applied to the lead wire 60.

As described above, according to the present embodiment, the blower 9, the heat exchanger 11, and the drain pan 13 that covers the lower surface of the heat exchanger 11 are housed in the housing 1, and the decorative panel 21 is disposed on the lower surface of the housing 1. In the ceiling-embedded air conditioner 200 provided with the electrical box 140 between the decorative panel 21 and the drain pan 13, a standing wall 51 facing the side plate 145 of the electrical box body 141 is formed on the lower surface of the drain pan 13. Since the lead wire 60 extending from the blower 9 to the electrical box 140 is routed to the wiring portion 146 between the standing wall 51 and the side plate 145, the lead wire 60 can be easily connected to the electrical box 140. Furthermore, since at least a part of the wiring portion 146 is covered with the lid body 142 of the electrical equipment box 140, the lead wire 60 is wired in a space surrounded by the standing wall 51, the side plate 145, and the lid body 142. The lead wire 60 is prevented from being exposed to the outside, and the lead wire 60 is reliably prevented from touching.

Further, according to the present embodiment, since the distance L1 between the edge 142B of the lid 142 and the lower end 51A of the standing wall 51 is shorter than the thickness D of the lead wire 60, the edge 142B of the lid 142 and the standing wall It is possible to prevent the lead wire 60 from being pulled out from the gap between the lower end 51 A of the 51.

Further, according to the present embodiment, the standing wall 51 has the curved portion 51B that widens the gap width of the wiring portion 146 more than the other positions at a position facing the lead wire drawing hole 145A of the side plate 145 of the electrical box main body 141. Therefore, when the connection work is performed, the lead wire 60 can be gently bent, and an excessive load can be prevented from being applied to the lead wire 60.

However, the above embodiment is an aspect of the present invention, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention.
For example, in this embodiment, the lid 142 of the electrical box 140 is described as a configuration in which the edge 142B of the lid 142 is arranged so as to partially cover the wiring portion 146 in the width direction. Of course, the body 142 may entirely cover the wiring portion 146 in the width direction.

DESCRIPTION OF SYMBOLS 1 Case 7 Turbo fan 7A Discharge port 8 Ventilation path 9 Blower 11

Heat exchanger

11A, 11B, 11C, 11E Linear shape part (side)
11M Tube sheet (corner)
12A, 12B, 12D Corner portion 13 Drain pan 14 Nozzle 15 Opening portion 16 Plane portion 21 Cosmetic panel 22 Suction port 23 Air outlet 41 Current plate 41A One end 41B Other end 42 Holder 43 Concavity and convexity portion 43A Concavity 43B Convex portion 50 Lead-in hole 51A Standing wall 51A Lower end (tip)
51B Bending part 60

Lead wire

100, 200 Ceiling embedded type air conditioner 140 Electrical box 141 Electrical box body 142 Lid (lid part)
145 Side plate 145A Lead wire lead-in hole 146 Wiring part 147 Connecting part

Claims

A blower in the housing, a polygonal heat exchanger disposed so as to surround the blower, and a rectifying plate having one end attached to the suction side of the linear portion of the heat exchanger and the other end extending to the blower side In the ceiling-embedded air conditioner, the rectifying plate has a plurality of concave and convex portions formed continuously in the longitudinal direction of the other end.
2. The ceiling-embedded air conditioner according to claim 1, wherein the concavo-convex portion is formed in a triangular shape having an apex angle of approximately a right angle.
3. The ceiling according to claim 1, wherein the rectifying plate is curved in a lateral direction, and the uneven portion is located on an upstream side with respect to an air flow from the blower to the heat exchanger. Implantable air conditioner.
4. The ceiling-embedded air conditioner according to claim 3, wherein the rectifying plate is arranged so that the uneven portion is substantially parallel to the linear portion of the heat exchanger.
5. The ceiling embedding according to claim 1, wherein the rectifying plate is attached to the linear shape portion at a position close to a corner portion of the heat exchanger located on the downstream side of the air. Built-in air conditioner.
A blower, a heat exchanger, and a drain pan that covers the lower surface of the heat exchanger are housed in a housing, a decorative panel is attached to the lower surface of the housing, and an electric box is embedded between the decorative panel and the drain pan. Type air conditioner,
A standing wall facing the side plate of the electrical box is formed on the lower surface of the drain pan, and a lead wire extending from the blower to the electrical box is routed between the standing wall and the side plate, and at least a part of the gap is placed in the electrical box. A ceiling-embedded air conditioner characterized in that it is covered with a lid.
The ceiling-embedded air conditioner according to claim 6, wherein a distance between an edge of the lid and a tip of the standing wall is shorter than a thickness of the lead wire.
The ceiling wall according to claim 6 or 7, wherein the standing wall includes a curved portion that extends a width of the gap more than other positions at a position facing a lead wire drawing hole of a side plate of the electrical box. Built-in air conditioner.