JP2921470B2 - Ceiling embedded air conditioner and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner embedded in a ceiling, and more particularly to a measure for reducing the weight of a casing.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 7-33269
There is known an air conditioner of a ceiling embedded type as disclosed in Japanese Patent Application Publication No. 9-209. An air conditioner of this type includes a turbofan, a heat exchanger, and the like in a casing suspended and supported inside an opening formed in a ceiling surface, and a decorative panel having a suction port and a blowout port in a lower portion of the casing. Is installed. Then, after the temperature of the room air sucked from the suction port with the driving of the turbofan is adjusted by the heat exchanger, the room air is blown out from the air outlet toward the room.

[0003] When installing this type of air conditioner on the ceiling, the device is inserted into the space above the ceiling through an opening in the ceiling, and the hanging bracket attached to the side of the casing is moved to the ceiling slab in the space above the ceiling. It is suspended by hooking it on a suspension bolt suspended from the ceiling.

[0004]

In such an installation operation, an operator holds the apparatus in a state where the apparatus is inserted into the space above the ceiling, and locks the suspension fitting to the suspension bolt while maintaining this state. Will be. And this kind of air conditioner was heavy, and the labor at the time of installation work was enormous. For this reason, the weight of the apparatus has been required to be reduced in advance.

In order to prevent the heat of the conditioned air flowing inside the casing of the air conditioner of this type from being released to the space above the ceiling, a heat insulating material is attached to the inner surface and the outer surface of the casing. This pasting operation is complicated, and there is a demand for improvement in this respect as well.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and by improving the structure of an apparatus casing, the area for attaching a heat insulating material is reduced to simplify the operation of manufacturing the casing. Another object of the present invention is to reduce the weight of the apparatus and reduce the labor required for installation work of the apparatus.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a case in which a side plate of a casing is partially made of a foamed resin material so that the side plate itself has a heat insulating property. The weight can be reduced.

[0008] More specifically, the invention according to claim 1 comprises a polygonal top plate (2a) and a plurality of side plates hanging from each side (2a-1 to 2a-8) of the top plate (2a). (2b-1 to 2b-8), inside which the blower (3) and the heat exchanger (6) are housed
A ceiling (2) installed in the (S), and the indoor air drawn into the casing (2) as the blower (3) is driven is adjusted in temperature by the heat exchanger (6) and blown out into the room It is based on an embedded air conditioner.

The lower part of the casing (2) has a rectangular shape.
A decorative panel (9) having a lower surface of
(9) The direction of air blowing into the room shall be four directions.
And four outlets (9b, 9b,…) corresponding to each side of the lower surface
To form Also, attach the top plate (2a) to the lower surface of the decorative panel (9).
Non-parallel not parallel to parallel sides (2a-1 to 2a-4)
Sides (2a-5 to 2a-8) are alternately arranged to form a substantially octagonal shape
Side that hangs from each parallel side (2a-1 to 2a-4) of the top plate (2a)
The plates (2b-1 to 2b-4) are made of foamed resin, and the non-parallel sides (2a-5 to
The side plates (2b-5 to 2b-8) hanging from 2a-8) are made of sheet metal.
I have.

Further, the left and right sides of the sheet metal side plates (2b-5 to 2b-8)
At the edges (25a, 25a) extending vertically on both sides, foamed wood
Adjacent sheet metal side plates (2b-1 to 2b-4)
b-5 ~ 2b-8) Holding part opened in U shape in plan view
(26,26) are provided respectively. In addition, foamed resin side plate (2b-1 ~
2b-4) side edges (28a, 28
a) with the holding part (2) of the adjacent sheet metal side plate (2b-5 to 2b-8).
6,26) and secured to each sheet metal side plate (2b-5 to 2b-8).
It has a configuration to hold.

As described above, the case made entirely of sheet metal
A part of the side plate (2b-1 to 2b-8) of the
As a result, the so-called four-way blowout type multi-flow air conditioner
The entire casing (2) is lighter and
Since the foamed resin itself has heat insulation, the side plate (2b-1 to
2b-4) Insulation can be provided for itself.
It is no longer necessary to attach conventional heat insulating material
In addition, foamed resin side plates (2b-1 to 2b-4)
To be held by the sheet metal side plate (2b-5 to 2b-8)
The side plate (2b-1 to 2b-4) made of foamed resin.
A special mounting structure for mounting to (2a) is required.
And not.

[0012] According to a second aspect of the invention, the ceiling embedded air conditioning apparatus according to the first aspect, the sheet metal plates (2b-5
2b-8), a heat insulating material (22) having a predetermined thickness is attached to the inner surface of the heat insulating material (2b-1 to 2b-4).
2) and the thickness of the sheet metal side plates (2b-5 to 2b-8) are substantially equal to the sum of the thickness dimensions.

According to this configuration, when the thickness of the side plate of the casing varies, the air flow area becomes larger inside the thin side plate than inside the other side plates.
There is a possibility that air drift may occur in the entire casing. Then, in order to avoid this drift, it is necessary to assemble the side plates while considering the thickness dimension of each side plate. In contrast, in the present invention, the side plate of the casing (2)
(2b-1 to 2b-8), since the thickness is substantially uniform over the entire area, the air circulation area inside the casing (2) is eliminated while assembling work in consideration of such thickness is unnecessary. Can be made uniform.

[0014] According to a third aspect of the invention, the ceiling embedded air conditioning apparatus according to the first aspect, a foam plate (2
b-1 to 2b-4) and adjacent sheet metal side plates (2b-5 to 2b-
8) are connected at their lower ends by a reinforcing material (31).

With this configuration, the side plates made of foamed resin (2b-1 to 2b-1)
2b-4) can be used to compensate for the decrease in the overall rigidity of the casing (2), and a sufficient rigidity can be ensured, and the weight of the casing (2) can be reduced.

According to a fourth aspect of the present invention, an approximately octagonal top plate is provided.
(2a) and a plurality of side plates (2b-1 to 2b-8) hanging from each side (2a-1 to 2a-8) of the top plate (2a).
(3) and a method of manufacturing an embedded ceiling air conditioner including a heat exchanger (6) and a casing (2) installed in a space above the ceiling (S). And the top plate (2a)
Every other side (2a-1 to 2a-8) of the sheet metal (2b-5
2b-8), and sheet metal side plates (25a, 25a) extending vertically on both left and right sides of the side plates (2b-5 to 2b-8) at predetermined intervals. Each of the holding portions (26, 26) which open toward 2b-5 to 2b-8) has a U-shape in plan view.
Then, the adjacent sheet metal side plates (2b-5 to 2b-8)
The side plates (2b-1 to 2b-4) made of foamed resin, and the side edges (28a, 28a) extending vertically
(26,26) so that it can be inserted from below.

As described above, the foamed resin side plates (2b-1 to 2b
-4) into the holding parts (26, 26) of the sheet metal side plates (2b-5 to 2b-8).
(2b-1 to 2b-4) with the top plate (2a) and the sheet metal side plate (2b-5 to 2b-
Can be assembled to 8), in this part, in particular, there is no need sheet metal side plates (2b-5 ~2b-8) work of screws or the like, such as when attached to the top plate (2a) work The properties are good.

[0018]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a ceiling-mounted air conditioner (1) according to the present embodiment. This air conditioner (1)
Is inserted into an opening (H) formed in the ceiling (R), and a casing (2) that opens downward is installed in the space above the ceiling (S). The casing (2) includes a top plate (2a) and a side plate (2b) extending downward from an outer edge of the top plate (2a),
Each device is accommodated therein. Hereinafter, each device will be described.

A turbo fan (3) is provided in the center of the casing (2). In this turbofan (3), a blade (3c) is held between a shroud (3a) and a hub (3b), and the center of the hub (3b) is
It is directly connected to the lower end of the drive shaft of the motor (4) arranged at the center. Then, by the rotation of the blade (3c) accompanying the driving of the motor (4), the air sucked from below is blown radially outward. A bell mouth (5) for guiding room air to the turbo fan (3) is provided below the turbo fan (3).

A heat exchanger (6) is provided around the outside of the turbo fan (3). This heat exchanger (6) is connected to an outdoor unit (not shown) via a refrigerant pipe, and functions as an evaporator during cooling operation and as a condenser during heating operation, and is derived from a turbo fan (3). Adjust the temperature of the air.

The heat exchanger (6) is provided below the heat exchanger (6).
Drain pan for collecting drain water generated in (6)
(8) is provided.

At the lower end of the casing (2), a decorative panel (9) having a rectangular shape in a plan view is attached. The decorative panel (9) has a rectangular air opening (9a) in the center and air outlets (9b), (9b),... At a plurality of (for example, four) side edge portions. Are formed respectively. That is, the air outlets (9b), (9b),... Are formed corresponding to the respective sides of the decorative panel (9). Also, decorative panel (9)
The air suction port (9a) is provided with an air filter (9c) for removing dust in the air sucked from the air suction port (9a).

An air inlet (9a) of the decorative panel (9) has a suction grill (12) removably attached thereto. The entire air inlet (9a) is located below the air filter (9c). It is arranged to cover from the side.

Thus, an air passage (10) is formed between the air inlet (9a) and the air outlet (9b) of the decorative panel (9), and the air passage (10) is formed in the air passage (10). , From upstream to downstream, air filter (9c), bell mouth (5), turbo fan
(3) The heat exchanger (6) is arranged in order.

Next, the above-mentioned casing characterized by this embodiment
The configuration of (2) will be described. In the following description, when manufacturing the casing (2), as shown in FIG.
Since (2) is vertical is the inverted from the installed state of FIG. 1, it will be referred in the vertical direction on the basis of the state shown in FIG. That is, the upper and lower sides are opposite to the description of FIG.

As shown in FIGS. 2 and 3 (FIG. 2 is a perspective view of the casing (2), and FIG. 3 is a perspective view of the top plate (2a) constituting the casing (2)). The plate (2a) is made of sheet metal and has a substantially octagonal shape in plan view. Specifically, as shown in FIG. 3, four first sides (2a-1 to 2a-4) having relatively large dimensions and four second sides (2a-5 to 2a-5) having relatively small dimensions are provided. 2a-8) are alternately arranged, and the first sides (2a-1, 2a-3) and (2a-2, 2a-4) facing each other are parallel. The first sides (2a-1 to 2a-4) are arranged in parallel with each side of the decorative panel (9). That is, the first side (2a-1 to 2a-4) is a parallel side parallel to each side of the decorative panel (9), and the second side (2a-5 to 2a-8) is a decorative panel.
It is a non-parallel side that is not parallel to each side of (9) .

[0027] One of the respective second side portion (2a-5 ~2a-8) ( the second side portion positioned on the left side in FIG. 3 (2a-8)) is a shape such that a part is notched Two sides (2a-8a, 2a-8b),
The other one (the second side (2a-
7)) also has a shape that is partially cut away and has three sides (2
a-7a, 2a-7b, 2a-7c) .

Each of these sides (2a-1 to 2a-4), (2a-5 to 2a-
8), the mounting flange (1) is bent upward in FIG. 3 (downward in the installation state shown in FIG. 1).
5) is formed. Further, the top plate (2a) is formed with a curved portion (16) which is curved so that a relatively wide area in the middle part is partially bulged upward. Further, as shown in FIG. 4, the outer peripheral edge of the top plate (2a) is bent in a stepped shape so as to be located above other portions. By bending a plurality of portions of the top plate (2a) in this manner, the rigidity as a whole is improved.

Heat insulating materials (17, 18) are adhered to both the inner and outer (upper and lower) surfaces of the top plate (2a). An inner heat insulating material having an outer edge along the mounting flange (15) on the inner surface (the upper surface in FIG. 3) of the top plate (2a) and having a central portion opened.
(17) is affixed. On the other hand, the outer surface of the top plate (2a) (the lower surface in FIG. 3) is formed slightly larger than the outer edge of the top plate (2a), and an outer heat insulating material (18) covering the entire outer surface is attached. Have been.

As described above , since the outer peripheral edge of the top plate (2a) is bent upward in a stepped shape, the top plate (2a)
A gap (B) is formed between the outer peripheral edge portion and the outer heat insulating material (18) (dimension t1 in FIG. 4).
A side heat insulator (19) for closing the gap (B) is attached. The side insulation (19) consists of a horizontal part (19a) and a vertical part (19).
b) is formed in an L-shaped cross section, and has a horizontal portion (19a).
Is inserted into the gap, and the vertical portion (19b) is attached to the outer surface of the mounting flange (15).

On the other hand, side plates (2b-1 to 2b-4), (2b-5 to 2b-8)
As shown in FIG. 2, each side (2a-1 to 2a-
4), it is erected along the mounting flange (15) formed in (2a-5 to 2a-8). And each side plate (2b-1
2b-4) and (2b-5 to 2b-8), the second side (2a-5 to 2a-8)
The side plates (2b-5 to 2b-8) provided on the first side (2a-1 to 2a-4) are made of sheet metal and attached to the flange (15) by means of screws or the like. ) Side plates (2b-1 to 2b-4) are foam polystyrene (foam resin)
It is made. Hereinafter, each side plate (2b-1 to 2b-4), (2b-5 to 2b-8)
Will be described.

First, the sheet metal side plates (2b-5 to 2b-8) will be described. In addition, here, the sheet metal side plate (2b-5) located on the back side in FIG. 2 will be described as an example. 5 to 8
(FIG. 5 (a) is a view of the sheet metal side plate (2b-5) viewed from the inside, FIG. 5 (b) is a bottom view of FIG. 5 (a), and FIG. 6 is a view taken along the arrow VI in FIG. 5 (b). FIG. 7 is a view in which the outer heat insulating material is omitted, and FIG. 7 is a view of FIG.
As shown in the sectional view taken along the line VII-VII, and FIG. 8 is a partially broken view in the sectional view taken along the line VIII-VIII in FIG. 5 (a)), the sheet metal side plate (2b-5) A heat insulating material (21, 22) is adhered to both the inner and outer surfaces of the bent side plate body (20) .

The side plate body (20) has a central plate portion (24) extending along the first side portion (2a-1), and second side portions (2a-1) from both left and right sides of the central plate portion (24). , 2a-4), a pair of left and right bent plates bent at a predetermined inclination angle (for example, 45 °)
(25, 25). Also, as shown in FIG.
(24) and the upper ends of the bent plate portions (25, 25) are folded inward, and the lower portion is bent stepwise at a plurality of locations, thereby forming a sheet metal side plate (2b-5 ) The overall rigidity is ensured.

As shown in FIG. 6, a notch (25b) formed by cutting off a part of a vertically extending edge (25a) of the bent plate (25) is formed. The part that is located on the upper and lower sides of this notch (25b) and left without being cut off is the styrene side plate (2b-1 to 2b-4).
Are configured as upper and lower holding portions (25c, 25d) for holding the holding member .

[0035] The edge (25e) extending in the vertical direction in the cutout portion (25b), the central holding portion formed in an L-type
(25f) is provided. The central holding portion (25f) is formed by bending a part of the bent plate portion (25) or by bending a sheet metal that is bent as a separate member from the bent plate portion (25). As shown in FIGS. 5 (b) and 7, the cutout (25b) extends inward from the edge (25e) of the notch (25b). A first extension (25g) and a second extension (25h) extending from an edge of the first extension (25g) in parallel with the upper and lower holding portions (25c, 25d).
It is equipped with a door.

The first extension (25g) extends in a direction orthogonal to the extension direction of the bent plate (25), and the second extension (25h) extends in the first extension (25g). 25g), and its horizontal dimension is
(25c, 25d) matches the horizontal length dimension. Due to such a configuration, each edge of the bent plate portion (25) has a U-shape in plan view composed of upper and lower holding portions (25c, 25d) and a center holding portion (25f). Styro side plate holding space (A)
Are formed (see FIG. 5B). In this way,
The holding portion (26) according to the present invention is configured.

An outer heat insulating material (21) having a relatively small thickness is attached to the entire outer surface of the sheet metal side plate (2a-5). On the other hand, in the portion of the inner surface of the sheet metal side plate (2a-5) except the periphery of the upper end portion, and each holding portion (25c, 25d, 25f)
Except for the inner heat insulator (2
2) is affixed.

The other sheet metal side plates (2b-6 to 2b-8) have substantially the same configuration as described above. In FIG. 2, the side plate body (20) of the sheet metal side plate (2b-7) located on the near side and the sheet metal side plate (2b-8) located on the left side is the second side portion (2a-
7,2a-8).

The sheet metal side plate (2b-5)
2b-8), the lower end (the upper end in FIG. 1) is screwed to the mounting flange (15) of the top plate (2a), and the top plate (2a)
At the second sides (2a-5 to 2a-8).

Next, the styrene side plates (2b-1 to 2b-4) disposed between the sheet metal side plates (2b-5 to 2b-8) will be described. Note that, here, the styrene side plate (2b-1) located on the far right side in FIG. 2 will be described as an example .

9 to 11 (FIG. 9 (a) is a view of the styrene side plate (2b-1) viewed from the outside, FIG. 9 (b) is a bottom view thereof,
10 is a cross-sectional view taken along line XX in FIG. 9, and FIG. 11 is a cross-sectional view taken along line XI-XI in FIG. 9.) The styrene-made side plate (2b-1) includes a main body ( 28)
And a frame (29) surrounding the periphery of the main body (28).

The main body (28) is entirely made of foam polystyrene, and has side edge portions (28a, 28a) around the left and right side edges.
The thickness of the central portion (28b) except for the thickness is set relatively large. Specifically, the thickness of the central portion (28b) is the same as that of the side plate main body (20), the outer heat insulator (21), and the inner heat insulator (22) of the sheet metal side plate (2b-5 to 2b-8). It is formed substantially equal to the sum of the thickness dimensions. Further, the outer surface (the upper surface in FIG. 9B) of the side edge portion (28a, 28a) is cut away by a predetermined size and is slightly retreated from the outer surface of the central portion (28b). The retreating dimension of the side edge portions (28a, 28a) is
b-5 to 2b-8) are formed so as to be substantially equal to the sum of the thicknesses of the side plate main body (20) and the outer heat insulating material (21).

On the other hand, the frame portion (29) is made of metal or resin, and is adhered to the upper, lower, left and right surfaces of the main body portion (28). The thickness of the frame portion (29) is determined by the side edge portion (2
8a, 28a) is set slightly smaller than the thickness dimension. The other styrene side plates (2b-2 to 2b-4) have substantially the same configuration as described above.

The styrene side plate having such a configuration.
(2b-1 to 2b-4) are arranged between the sheet metal side plates (2b-1 to 2b-4) erected on the top plate (2a), and the side edge portions thereof
(28a, 28a) is inserted into the styrene side plate holding space (A) of each sheet metal side plate (2b-1 to 2b-4), and each holding part (25
c, 25d, 25f).

Further, as shown in FIG. 2, the styrene side plate (2b-
1 to 2b-4) and the adjacent sheet metal side plates (2b-5 to
A reinforcement stay (31) is installed between the upper ends of 2b-8). The reinforcing stay (31) is formed so that a sheet metal is bent and has a cross-sectional shape substantially matching the cross-sectional shape of the upper end of the sheet metal side plate (2b-5 to 2b-8). Corresponds to the distance between the sheet metal side plates (2b-5 to 2b-8). Then, both ends of this reinforcing stay (31) are
(2b-5 to 2b-8)
The sheet metal side plates (2b-5 to 2b-8) are connected to each other.

Next, as an operation of assembling the casing (2), the side plates (2b-1 to 2b-4) and (2b-5 to 2b-8) are attached to the top plate (2a).
The operation for assembling the components will be described. In this assembly work,
First, the sheet metal side plates (2b-5 to 2b-8) are attached to the top plate (2a), and then the styrene side plates (2b-1 to 2b-4) are attached.

In the work of attaching the sheet metal side plates (2b-5 to 2b-8), as shown in FIG. 3, each second side (2a-2) of the top plate (2a) arranged so that the inner surface faces upward. 5 to 2a-8) on the mounting flange (15), sheet metal side plates (2b-5 to 2b-8) formed corresponding to the shape of each second side (2a-5 to 2a-8) The lower end of each is overlapped and screwed. Thereby, the styrene side plates (2b-1 to 2b-) are placed between the sheet metal side plates (2b-5 to 2b-8).
4) With the arrangement space of 4) formed, each second side (2a-5)
To 2a-8), side plates made of sheet metal (2b-5 to 2b-8) are erected.

Then, a styrol side plate (2b-1 to 2b-4)
In the assembling work, the styrene side plate holding space (A) formed by the holding portions (25c, 25d, 25f) provided on both sides of each sheet metal side plate (2b-5 to 2b-8) The styrene side plates (2b-1 to 2b-4) are slid from above so that the left and right sides of each styrene side plate (2b-1 to 2b-4) fit into the styrene side plates (2b-1 to 2b-4). -1 to 2b-4) contact the upper and lower holding parts (25c, 25d) of the sheet metal side plates (2b-5 to 2b-8), and the styrene side plates (2b-1 to 2b).
-4) is a sheet metal side plate (2b-5 to 2b).
-8) and is located in the styrene side plate holding space (A) in contact with the center holding portion (25f) of each sheet metal side plate (2b-5 to 2b).
-8) .

Thus, each side (2a-1 to 2a) of the top plate (2a)
-4), (2a-5 to 2a-8) , sheet metal side plates (2b-5 to 2b-8) and styrene side plates (2b-1 to 2b-4) along the circumferential direction of the top plate (2a)
Are arranged alternately, and the casing (2) is formed in a box shape opened upward. In this state, since the thickness of each part of each side plate (2b-1 to 2b-8) has the above-described relationship, the bent plate part of the sheet metal side plate (2b-5 to 2b-8) The outer surface of (25) and the outer surface of the central portion (28b) of the styrene side plates (2b-1 to 2b-4) are assembled flush with each other, and their inner surfaces are also substantially flush. ing. For this reason, the flow passage area of the air inside each side plate (2b-1 to 2b-8) is substantially uniform, so that the occurrence of air drift or the like is avoided.

Each of the side plates (2b-1 to 2b-4), (2b-5 to
2b-8), the top plate (2a) and its outer insulation (1
7), the above-mentioned side heat insulating material (19) is attached (see FIG. 4), and the notch (25) of the sheet metal side plate (2b-5 to 2b-8) is provided.
From the outside of b), an auxiliary heat insulating material (30) having a shape conforming to the notch (25b) is attached (see FIG. 12).
The thickness of the auxiliary heat insulating material (30) is determined by the center part (28b) and the side edge part (28) of the styrene side plate (2b-1 to 2b-4).
a), and the auxiliary heat insulating material (30) is attached to the notch (25b), whereby the auxiliary heat insulating material (30) is attached to the side edge portion (28a). ), The outer surface of the auxiliary heat insulator (30) and the side plate (2b-1 to 2b-8)
Is flush with the outer surface. In this way each insulation
By mounting (19, 30), a heat insulating structure is provided over the entire outer surface of the casing (2).

Then, the styrene side plate (2b-1 to 2b-4)
A reinforcing stay (31) is erected between the upper ends of the sheet metal side plates (2b-5 to 2b-8) adjacent to each other with the interposition therebetween. This allows
The sheet metal side plates (2b-5 to 2b-8) are connected to each other, the strength of each of the sheet metal side plates (2b-5 to 2b-8) in the standing state is improved, and the rigidity of the casing (2) as a whole is improved. Is secured high.

When the air conditioner (1) provided with the casing (2) manufactured in this manner is hung in the space above the ceiling (S), the device (1) is connected to the opening ( H) into the space above the ceiling (S), and attach the unillustrated hanging bracket attached to the outer surface of the sheet metal side plate (2b-5 to 2b-8) to the space above the ceiling.
In (S), this is performed by engaging a hanging bolt (not shown) that is suspended from the ceiling slab. In other words, the side plate (2b) of the casing (2) is made of sheet metal only for the parts that require particularly rigidity, and the other parts are made of foam polystyrene to reduce the weight while ensuring heat insulation. Is available.

As described above, in this embodiment,
Part of the side plates (2b-1 to 2b-4) that make up the casing (2) are made of a foamed resin material (foam polystyrene), so that the weight of the casing (2) can be reduced while maintaining high insulation performance. This makes it possible to reduce the labor required for suspending the apparatus (1) in a state where the apparatus (1) is inserted into the space above the ceiling (S), thereby improving workability.

In this embodiment, the top plate (2a) has a substantially octagonal shape. However, the top plate (2a) is not limited to this, and may have other polygonal shapes.
It may be.

[0055]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, since the plurality of side plates constituting the casing of the ceiling-embedded air conditioner are formed by the sheet metal side plate and the foamed resin side plate, the entire casing is reduced in weight, and Since the foamed resin itself has a heat insulating property, the side plate itself can be provided with a heat insulating function. For this reason, labor when installing the apparatus on the ceiling surface can be reduced, and workability is improved. In addition, since it is not necessary to attach the heat insulating material to the portion made of the foamed resin in each of the side plates, the attaching operation of the heat insulating material for the entire casing can be simplified.

An air conditioner to which the present invention is applied is:
By using a so-called four-way blowing type multi-flow air conditioner, a configuration embodying the present invention can be obtained, and the practicality can be improved.

[0057] Further, viewed from the right and left side portions of the sheet metal plate is provided with a U-shaped holding portion, so as to hold the respective sheet metal plates by positioning a side edge portion of the foamed resin plates to the holding portion Therefore, a special mounting structure for mounting the foamed resin side plate to the top plate is not required, and a relatively simple configuration can be achieved and the number of steps for mounting the side plate can be reduced.

According to the second aspect of the present invention, the thickness of the foamed resin side plate is substantially equal to the sum of the thicknesses of the sheet metal side plate and the heat insulating material attached to the inner surface of the sheet metal side plate. If there is a variation in the thickness of the side plates of the casing, the air circulation area becomes larger inside the thin side plates than inside the other side plates, and there is a possibility that air drift may occur as a whole inside the casing. In order to avoid this drift, it is necessary to assemble the side plates while considering the thickness of each side plate, but in the present invention, the thickness of the side plate of the casing is substantially Since it is uniform, it is possible to make the air circulating area inside the casing uniform while eliminating such assembling work in consideration of the thickness dimension, and to improve the assembling workability.

According to the third aspect of the present invention, the lower end portions of the adjacent sheet metal side plates are connected to each other by the reinforcing material via the foamed resin side plate, so that the entire casing by adopting the foamed resin side plate is provided. It can compensate for the decrease in rigidity, ensure sufficient rigidity and reduce the weight of the casing,
Further, the practicality can be improved.

According to the fourth aspect of the present invention, the foamed resin side plate is attached to the top plate and the sheet metal side plate by a simple operation of inserting the foamed resin side plate into the holding portion of the sheet metal side plate. Therefore, the workability can be improved and the time required for assembling the side plates can be shortened.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embedded ceiling air conditioner according to an embodiment.

FIG. 2 is a perspective view of a casing.

FIG. 3 is a perspective view of a top plate.

FIG. 4 is a sectional view of an outer edge portion of the top plate.

5 (a) is a view of a sheet metal side plate viewed from the inside, and FIG. 5 (b) is a bottom view of FIG. 5 (a).

FIG. 6 is a view taken in the direction of arrow VI in FIG. 5 (b).

FIG. 7 is a sectional view taken along the line VII-VII of FIG.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 5 (a).

FIG. 9 (a) is a view of a styrene side plate viewed from the outer surface side,
(b) is a bottom view thereof.

FIG. 10 is a sectional view taken along line XX in FIG. 9;

11 is a sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is a diagram showing an operation of attaching an auxiliary heat insulating material.

[Explanation of symbols]

 (1) Ceiling embedded type air conditioner (2) Casing (2a) Top plate (2a-1 to 2a-4) First side (parallel side) (2a-5 to 2a-8) Second side ( (Non-parallel side) (2b-1 to 2b-4) Styro side plate (foam resin side plate) (2b-5 to 2b-8) Sheet metal side plate (22) Inner heat insulator (25a) Edge (26) Retain Part (28a) Side edge (31) Reinforcement stay (reinforcement member) (6) Heat exchanger (9) Decorative panel (9b) Air outlet (S) Ceiling space

Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F24F 1/00 401

Claims (4)

(57) [Claims] 1. A polygonal top plate (2a) and a plurality of side plates (2b-1 to 2b) hanging from each side (2a-1 to 2a-8) of the top plate (2a).
-8), and a casing (2) that houses a blower (3) and a heat exchanger (6) and is installed in the space above the ceiling (S), and is driven by the drive of the blower (3). In a ceiling-embedded air conditioner that adjusts the temperature of the room air drawn into the casing (2) by the heat exchanger (6) and blows out the room , a rectangular lower surface is provided at the bottom of the casing (2). Having makeup
Panel (9) is attached, and the decorative panel (9)
, So that the direction of air blowing into the room is four directions,
Four outlets (9b, 9b,…) are formed at four locations corresponding to each side of the lower surface
The top plate (2a) is parallel to the lower surface of the decorative panel (9).
Non-parallel sides (2a-5 to 2a-8) that are not parallel to (2a-1 to 2a-4)
Are alternately arranged to form a substantially octagonal shape. Of the plurality of side plates (2b-1 to 2b-8), each of the top plate (2a)
Side plate (2b-1 to 2b-4) hanging from parallel side (2a-1 to 2a-4)
Is made of foam resin and hangs from non-parallel sides (2a-5 to 2a-8)
Side plates (2b-5 to 2b-8) are made of sheet metal, and extend vertically on both left and right sides of the sheet metal side plates (2b-5 to 2b-8).
The side edges (2b-1 to 2b-
4) to the adjacent sheet metal side plate (2b-5 to 2b-8)
Holders (26, 26) are provided, each of which has a U-shape in plan view.
The side plates (2b-1 to 2b-4) made of foamed resin are
The side edges (28a, 28a) extending in the vertical direction are
Each sheet metal is located inside the holding part (26, 26) of the plate (2b-5 to 2b-8).
An embedded ceiling air conditioner characterized by being held by side plates (2b-5 to 2b-8) . 2. The inner surface of the sheet metal side plate (2b-5 to 2b-8)
A heat insulating material (22) with a constant thickness is affixed, and the thickness of the foam resin side plates (2b-1 to 2b-4) is
(22) and the sum of the thickness of the sheet metal side plates (2b-5 to 2b-8)
2. The ceiling according to claim 1, wherein the heights are substantially equal.
Well embedded type air conditioner. (3 ) via a foamed resin side plate (2b-1 to 2b-4);
The lower ends of adjacent sheet metal side plates (2b-5 to 2b-8)
Claims characterized by being connected by a strong material (31)
Item 7. The ceiling-mounted air conditioner according to Item 1. 4. A top plate (2a) having a substantially octagonal shape and a top plate (2a).
Plural side plates (2b-1 to 2b-2) hanging from each side (2a-1 to 2a-8)
b-8) with a blower (3) and a heat exchanger (6) inside.
Casing (2) housed and installed in the space above the ceiling (S)
A method of manufacturing a ceiling-embedded air conditioner comprising: a sheet metal every other side (2a-1 to 2a-8) of the top plate (2a).
Attach the side plate (2b-5 to 2b-8) and attach the side plate (2b-5 to 2b-8)
Edges (25a, 25a) extending vertically on both left and right sides of
Adjacent sheet metal side plates (2b-5 to 2b-8) at predetermined intervals
The holding parts (26, 26) opened in
The side plates made of sheet metal adjacent to each other (2b-5 to 2b
8-8), the side plates (2b-1 to 2b-4) made of foamed resin are
Side edges (28a, 28a) extending vertically on both left and right sides of the
From the bottom so that they can be inserted into the holding parts (26, 26).
And a method of manufacturing a ceiling-mounted air conditioner.