KR100710089B1 - Ceiling embedded-type air conditioning apparatus - Google Patents

Abstract

In the ceiling-insertable air conditioning apparatus in which the blower 9 and the heat exchanger 11 surrounding the blower 9 are disposed in the housing 1, the heat exchanger 11 is bent in a polygonal shape, and a part of the heat exchanger 11 ( 11D) was provided with the structure which protrudes toward the housing 1 side at the position corresponding to at least one side 1D of the housing 1. Below the heat exchanger 11, the drain pan 13 which integrally molds the resin frame for drain pan sheets, and foamed styrol is arrange | positioned, and the suction hole toward the inlet of a blower is formed in the substantially center part of this drain pan. The foamed plastics 53 are made to penetrate through the resin frame 51, and the boss 61 which faces the surface of the opposite side is formed, and the bell mouse of a blower is fixed to this boss 61. FIG.

Boss, housing, heat exchanger, drain pan, foamed plastic

Description

CEILING EMBEDDED-TYPE AIR CONDITIONING APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ceiling insertion type air conditioning apparatus having a heat exchanger arranged to surround a blower, and in particular, makes it possible to effectively use a space for storing various devices such as pipes, drain pumps, and electrical equipment boxes in the main body of the ceiling insertion type air conditioning apparatus. Or to a ceiling insertion type air conditioning device having a configuration that facilitates the attachment of these devices.

Generally, a heat exchanger is arranged to surround a blower installed in an air conditioning apparatus main body (housing), and a blowout air outlet is disposed to face a space outside the heat exchanger, and the air from the blower is exchanged through a heat exchanger to exchange heat. BACKGROUND ART There is known a ceiling insertion type air conditioning apparatus that blows in the roughened air from the outlet to the room.

In this kind of structure, various components such as heat exchangers, pipes, transmission boxes, and drain pumps are accommodated in a narrow space in the housing. Given. On the other hand, heat exchangers are required to obtain as much capacity as possible by increasing the heat transfer area as much as possible.

Further, a drain pan formed by integrally molding the resin frame for the drain pan sheet and the foamed styrol is disposed below the heat exchanger of the ceiling insertion type air conditioning apparatus of this kind, and the suction hole toward the suction port of the blower is disposed at the center of the drain pan. Is formed. In this kind of thing, it is common to embed an insert member in the foamed styrol face on the opposite side to the resin frame, and to screw the blower's resin bell mouse, electrical box or the like to the insert member.

However, in such a configuration, the insert member must be embedded in the foamed styrol face, resulting in poor workability. In addition, although the suction hole is formed in the foamed styrol, the foamed styrol is exposed around the suction hole in such a configuration, so that there is a problem that the corner portion of the foamed styrol is liable to be carried during transportation.

Accordingly, a first object of the present invention is to provide a heat exchanger capable of efficiently storing a heat exchanger in a narrow space in a housing and increasing its heat transfer area, and a ceiling insertion type air conditioning apparatus using the same.

Moreover, the 2nd object of this invention is to solve the above-mentioned problem, and to provide the drain pan which can attach easily apparatuses, such as a bell mouse of a blower, an electrical equipment box, and a ceiling insertion type air conditioning apparatus using the same.

 In order to achieve the above object, according to a first aspect of the present invention, in a ceiling-insertable air conditioning apparatus having a blower and a heat exchanger surrounding the same, the heat exchanger is bent in a polygonal shape, and a part of the heat exchanger is It provides a ceiling-insertable air conditioning apparatus characterized by having a configuration projecting toward the housing side.

According to a second aspect of the present invention, in the above-described ceiling-insertable air conditioning apparatus, a part of the heat exchanger protrudes toward the housing at a position corresponding to at least one side of the housing, so that at one side of the housing and part of the heat exchanger At least two device receiving spaces are formed.

According to a third aspect of the present invention, in the above-described ceiling-insertable air conditioning apparatus, the pipes and the drain pump of the heat exchanger are disposed in the two device accommodation spaces, respectively.

According to a fourth aspect of the present invention, in the above-described ceiling-insertable air conditioning apparatus, the heat exchanger is bent into a substantially pentagonal shape, including a part of the heat exchanger protruding toward the housing side.

According to a fifth aspect of the present invention, in the above-described ceiling-insertable air conditioning apparatus, the bend start position and the bend end position of the heat exchanger bent in a polygonal shape are connected by a narrow tube plate.

According to a sixth aspect of the present invention, in the above-described ceiling-insertable air conditioning apparatus, an auxiliary heater is further disposed between the heat exchanger and the blower, and the electric component of the auxiliary heater is a bending start position of the polygonal heat exchanger. And the tube plate connecting the bending end position with each other.

According to a seventh aspect of the present invention, in the above-described ceiling-insertable air conditioning apparatus, each corner portion of the polygonal heat exchanger is bent using a common bending roller jig.

According to the eighth aspect of the present invention, in the above-mentioned ceiling-insertable air conditioning apparatus, a part of the heat exchanger protruding toward the housing side overlaps with a blower outlet disposed opposite the outer space of the heat exchanger.

According to the ninth aspect of the present invention, in the above-mentioned ceiling insertion type air conditioning apparatus, a drain pan formed by integrally molding a resin frame for drain pan sheet and foamed plastic is disposed below the heat exchanger, and is substantially centered on the drain pan. The suction hole is formed in the suction port facing the inlet of the blower, the foamed styrol is passed through the resin frame to form a boss facing the opposite side, characterized in that the bell mouse of the blower is fixed to the boss. do.

According to a tenth aspect of the present invention, in the above-described ceiling-insertable air conditioning device, the electrical equipment box is fixed to the boss.

According to an eleventh aspect of the present invention, in the ceiling insertion type air conditioning apparatus, a reinforcing rib is formed around the boss.

According to a twelfth aspect of the present invention, in the ceiling insertion type air conditioning device, a suction hole reinforcement rib is formed in the resin frame to surround the suction hole formed in the foamed styrol.

According to a thirteenth aspect of the present invention, in the ceiling insertion type air conditioning apparatus, the suction hole reinforcing rib extends around a lead wire guide concave hole formed around the suction hole.

According to a fourteenth aspect of the present invention, in the above-described ceiling-insertable air conditioning apparatus, the ceiling-insertable air conditioning apparatus is disposed so as to surround the blower and bent in a polygonal shape, a part of which is at least corresponding to one side of the housing. Provides a heat exchanger characterized in that it has a configuration to project toward the housing.

According to a fifteenth aspect of the present invention, the heat exchanger includes a portion that protrudes toward the housing side and is bent in a pentagonal shape.

According to a sixteenth aspect of the present invention, in the heat exchanger, a bending start position and a bending end position of the heat exchanger bent in the polygonal shape are connected by a narrow tube plate.

According to a seventeenth aspect of the present invention, in the heat exchanger, each corner of the polygonal heat exchanger is bent using a common bending roller jig.

According to an eighteenth aspect of the present invention, there is provided a drain pan, which is disposed below a heat exchanger of a ceiling-insertable air conditioning apparatus and is formed by integrally molding a resin frame for drain pan sheet and foamed plastic, and penetrates the foamed plastic through the resin frame. A boss is provided so as to form a boss facing the surface on the opposite side, and an accessory part can be fixed to the boss to provide a drain pan.

According to a nineteenth aspect of the present invention, in the drain pan, a reinforcing rib is formed around the boss.

According to a twentieth aspect of the present invention, in the drain pan, a suction hole reinforcing rib is formed around the suction hole formed in the foamed plastic in the resin frame.

According to a twenty-first aspect of the present invention, in the drain pan, the suction hole reinforcing rib extends around the lead wire guide concave hole formed around the suction hole.

 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an embodiment of a ceiling insertion air conditioning apparatus and a heat exchanger according to the present invention.

Fig. 2 is a plan view of the air conditioning apparatus body with the drain pan removed.

3 is a perspective view of a heat exchanger;

4 is a plan view of an air conditioning apparatus main body with a drain pan;

5 is a cross-sectional view taken along line V-V in FIG.

6A is a plan view of the resin frame, and FIG. 6B is a sectional view taken along line B-B in FIG. 6A.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described with reference to an accompanying drawing.

As shown in FIG. 1, the ceiling insertion type air conditioning apparatus of this embodiment has the sheet metal box type air conditioning apparatus main body 1, and is suspended from the ceiling by the suspending bolt 2. As shown in FIG. This air conditioning apparatus main body 1 is opened downward and when this is embedded in the ceiling, this opening side opposes the artificial chamber. The motor 5 is fixed inside the air conditioning apparatus main body 1, and the impeller 7 is attached to the shaft of this motor 5. These constitute the blower 9. A heat exchanger 11 bent in a polygonal shape is disposed to surround the blower 9, a drain pan 13 is disposed below the heat exchanger 11, and a bell mouth 14 is disposed on the drain pan 13. ) Is attached.

And the makeup panel 21 is attached to the lower surface of the air-conditioning apparatus main body 1, and the makeup panel 21 is provided with the suction port 22 and the blowout port 23, The inside of the suction port 22, the filter ( 25) is installed.

FIG. 2 is a plan view of the air conditioning apparatus main body 1 in a state where the drain pan 13 is removed. In the present embodiment, the heat exchanger 11 described above is bent in a substantially pentagonal (polygonal) shape and disposed inside the air conditioning apparatus main body 1.

The three sides 11A, 11B, 11C of the heat exchanger 11 extend substantially parallel to the three sides 1A, 1B, 1C of the air conditioning apparatus main body (housing) 1, and the remaining part 11D Is projected in a triangular shape on one side 1D side of the housing 1 at a position corresponding to one side 1D of the housing 1. As shown in Fig. 3, the heat exchanger 11 is formed by stacking a fin-and-tube heat exchanger in a double direction with respect to the flow direction of air indicated by a solid arrow. The corners A, B, C, D) are bent in a pentagonal (polygonal) shape with the same roller (not shown) having a radius R set on the bending roller jig. In addition, this heat exchanger 11 is connected between the bending start position (one end of the heat exchanger; 11K) and the bending end position (the other end of the heat exchanger; 11L) via a narrow tube plate 11M. .

By the way, with reference to FIG. 2, the space which arrange | positions the piping flow 27 and the drain pump 28 of a heat exchanger needs to be secured in the space outside the heat exchanger 11, and also the inside of the heat exchanger 11 is shown. In the space, it is necessary to secure a space in which the bell mouse 14 and the transmission box 45 are arranged. In addition, in recent years, when the heat exchanger 11 is arranged in a narrow space in the housing 1, certain restrictions are imposed on the bent shape of the heat exchanger 11, while the heat transfer area is increased as much as possible to obtain a large heat exchange capacity. Is required.

In the present embodiment, the portion 11D of the heat exchanger 11 is projected to the housing 1 side (that is, the portion 11D is projected outward) so that this portion does not protrude (that is, all The heat transfer area can be increased compared to the one having the flattened side) structure, and the pipes 27 and the drain pump 28 are dispersed in the relatively large spaces S1 and S2 on both sides by sandwiching a part 11D. By arrange | positioning, these apparatuses can be accommodated efficiently.

In addition, since the gap between the bend start position 11K and the bend end position 11L of the heat exchanger 11 is approached and connected with the narrow tube plate 11M, the heat transfer area is larger than that with the wide tube plate. Can be increased.

In the above configuration, when the heat exchanger 11 is bent, the rollers are not required because the same rollers having a radius R are replaced, and the manufacturing process of the heat exchanger 11 is simplified to reduce the manufacturing cost.

FIG. 4 is a plan view showing a state in which the drain pan 13 is attached to the air conditioning apparatus main body 1 shown in FIG. This air conditioning apparatus main body 1 (indicated by a dashed-dotted line in FIG. 4) is provided with the substantially rectangular internal blower outlet 41 in 4 sides, and this internal blower outlet 41 is the makeup panel 21 shown in FIG. Is communicated with the outlet 23 of (). The drain pan 13 is integrally formed with a projection 13A protruding into the internal blowout opening 41 at a position corresponding to part 11D of the heat exchanger 11.

In this structure, since a part 11D of the heat exchanger 11 which protrudes toward the housing 1 side overlaps with the blowout port 23 corresponding to the space of the outer side of this heat exchanger 11 slightly, It faces toward the said projection part 13A of the drain pan 13 corresponding to part 11D. The protruding portion 13A can achieve a great effect that the heat transfer area can be increased by protruding the portion 11D to an extent overlapping the ejection opening 23.

In addition, in this embodiment, the auxiliary heater 43 may be arrange | positioned as shown by the broken line between the heat exchanger 11 and the blower 9 like FIG. In this case, the electrical components of the auxiliary heater 43 are supported by the tube plate 11M connecting the bending start position 11K and the bending end position 11L of the heat exchanger 11. According to this, an extra support for supporting the electric component of the auxiliary heater 43 becomes unnecessary, so that the manufacturing cost is reduced.

As shown in Figs. 2 and 4, since part 11D of the heat exchanger 11 protrudes in a triangular shape toward the housing 1 side, the shape of the electrical equipment box 45 depends on the shape of this part 11D. It is formed to bend substantially in a shape.

Electric box 45 of this kind is generally straight, so that electric box 45 protrudes significantly into bell mouse 14 to reduce the suction area of blower 9. In the present embodiment, the electric box 45 is bent in a substantially square shape according to the shape of the portion 11D of the heat exchanger 11, so that the electric box 45 does not protrude into the bell mouth 14. The suction area of the blower 9 is largely secured.

Next, the structure of the drain pan mentioned above is demonstrated in more detail.

FIG. 5 is a V-V cross sectional view of the drain pan 13 shown in FIG.

The drain pan 13 constitutes approximately the entire surface of the upper surface of the drain pan 13, and has a resin frame 51 for drain pan sheets, which is unevenly formed into a predetermined shape having a thickness of about 2 mm, and a drain pan (mainly as a heat insulating material). It is comprised by integrally molding the foamed styrol 53 which comprises the whole shape of 13).

The suction hole 55 which the suction port of the blower 9 faces is formed in the substantially center part of this drain pan 13, and the bell mouth 14 of the blower 9 is inserted in this suction hole 55. As shown in FIG. This bell mouse 14 is fixed to the drain pan 13 using the some screw 56 as shown in FIG. In addition, the electrical storage box 5 is fixed to this drain pan 13 using the some screw 58.

6A is a plan view of the resin frame 51 for the drain pan sheet, and FIG. 6B is a sectional view taken along line B-B in FIG. 6A.

As shown in Figs. 5, 6A and 6B, the foamed styrol 53 is penetrated through the resin frame 51 having a thickness of about 2 mm, and its head is directed to the opposite side of the foamed styrol 53. The threaded boss 61 is integrally formed by the number corresponding to the number of the screws 56 and 58. The screw 56 for fixing the bell mouse 14 and the screw 58 for fixing the electric box 45 are, for example, screws integrally formed in the resin frame 51 as shown in Fig. 6B. It is screwed to the boss 61 for a base.

In this structure, the operation | work which embeds the insert member which fixes the bell mouse 14 and the electrical equipment box 45 to the foamed plastic 53 is unnecessary, and these fixing work efficiency can be improved.

6A and 6B, reinforcing ribs 63 are formed around the bosses 61, and the bosses 61 and the resin frame 51 are reinforced. In addition, the resin frame 51 is formed with suction hole reinforcement ribs 64 surrounding the periphery of the suction hole 55 formed in the foamed plastic 53, and the suction hole 55 made of foamed styrol is reinforced. . Around the suction hole 55 of the foamed plastic 53, a substantially U-shaped lead wire guide recess hole 65 for drawing lead wires such as the auxiliary heater 43 (FIG. 2) is formed. A recess hole reinforcing rib 67 extends around the hole 65, and the recess hole reinforcing rib 67 is formed integrally with the resin frame 51.

In this structure, since the boss 61, the suction hole reinforcement rib 64, the recess hole reinforcement rib 67, etc. are integrally formed with respect to the resin frame 51, the intensity | strength of the drain pan 13 can be raised. have.

As mentioned above, although this invention was demonstrated based on one Embodiment, it is clear that this invention is not limited to this. For example, although the shape of the heat exchanger of the present invention is substantially pentagonal, the present invention is not limited thereto, and may be arbitrarily selected depending on the storage size, the number of devices, and the like of the various devices to be stored. .

In the ceiling insertion type air conditioning apparatus of the present invention, the heat exchanger can be efficiently stored in a narrow space in the housing, and the heat transfer area can be increased. In addition, by using the space formed between the heat exchanger and the housing or the space formed in the heat exchanger, it is possible to efficiently store various devices such as pipes, drain pumps and transmission boxes in a compact manner. Alternatively, for example, a bell mouse, an electrical equipment box, or the like of the blower can be easily attached to the drain pan.

Claims (21)

A ceiling-insertable air conditioning apparatus in which a blower and a heat exchanger surrounding the blower are disposed in a housing, The heat exchanger is bent in a polygonal shape, curved corner portion of the heat exchanger corresponding to the corner portion of the housing, and bent so as to protrude some of the straight edge portion not the curved corner portion of the heat exchanger toward the housing side. Ceiling insert air conditioning apparatus, characterized in that. The method of claim 1, wherein a part of the heat exchanger protrudes toward the housing at a position corresponding to at least one side of the housing to form at least two device accommodation spaces on one side of the housing and a part of the heat exchanger. Ceiling insertion type air conditioning device. The in-ceiling type air conditioner according to claim 2, wherein the pipes and the drain pump of the heat exchanger are respectively disposed in the two device accommodation spaces. The in-ceiling type air conditioner according to claim 1, wherein the heat exchanger is bent into a substantially pentagonal shape, including a part of the heat exchanger protruding toward the housing side. The in-ceiling type air conditioner according to claim 1, wherein a bending start position and a bending end position of the heat exchanger bent in a polygonal shape are connected by a narrow tube plate. An auxiliary heater is further disposed between the heat exchanger and the blower, and electrical components of the auxiliary heater are supported by the tube plate connecting a bending start position and a bending end position of the polygonal heat exchanger. Ceiling insertion type air conditioning device, characterized in that there is. The in-ceiling type air conditioner according to claim 1, wherein each corner of the polygonal heat exchanger is bent using a common bending roller jig. 2. The ceiling insertion type air conditioning apparatus according to claim 1, wherein a part of the heat exchanger protruding toward the housing is overlapped with a blowout outlet disposed to face a space outside the heat exchanger. The drain pan formed by integrally molding the resin frame for drain pan sheet and foamed styrol is arrange | positioned under the said heat exchanger, The suction hole toward the inlet of the said blower is formed in the substantially center part of the said drain pan, And a boss facing the surface on the opposite side by penetrating the foamed styrol through the resin frame, and a bell mouth of the blower is fixed to the boss so as to be fixed to the resin frame. The in-ceiling type air conditioner according to claim 9, wherein an electrical equipment box is fixed to the boss. 10. The in-ceiling type air conditioner according to claim 9, wherein a reinforcing rib is formed around the boss. The in-ceiling type air conditioner according to claim 9, wherein a suction hole reinforcing rib is formed in the resin frame to surround a suction hole formed in the foamed plastic. The in-ceiling type air conditioner according to claim 12, wherein the suction hole reinforcing rib extends around a lead wire guide concave hole formed around the suction hole. It is arranged to surround the blower in the housing of the ceiling-insertable air conditioning apparatus and bent in a polygonal shape, and the corner portion corresponding to the corner portion of the housing is curved, and the curved portion protruding some of the straight edge portions other than the curved corner portion toward the housing side. Heat exchanger characterized in that it was provided with a configuration. 15. The heat exchanger according to claim 14, wherein the heat exchanger is bent in a pentagonal shape, including a portion protruding toward the housing side. 15. The heat exchanger according to claim 14, wherein the heat exchanger bent in the polygonal shape is connected to a bend start position and a bend end position by a narrow tube plate. The heat exchanger according to claim 14, wherein each corner of the polygonal heat exchanger is bent using a common bending roller jig. delete delete delete delete

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