JP5096693B2 - Embedded ceiling air conditioner - Google Patents

Description

  The present invention relates to a ceiling-embedded air conditioner including a drain pan that receives water dripped from a heat exchanger.

In a general ceiling-embedded air conditioner, a heat exchanger is disposed so as to surround a blower provided in a casing, and a drain pan made of a drain pan sheet and a foam material is disposed below the heat exchanger. Has been placed. The drain pan receives condensed water dripped from the heat exchanger, and stores the condensed water as drain water inside the drain pan. The drain water is pumped up using a drain pump and is appropriately discharged (see, for example, Patent Document 1).
JP 2004-93005 A

  At the bottom of the drain pan, dust adhering to the outside of the heat exchanger drops on the drain pan together with condensed water and accumulates on the bottom of the drain pan. Therefore, it is necessary to appropriately clean the dust on the bottom surface. However, in the above-described ceiling-embedded air conditioner, even if the decorative panel constituting the ceiling surface is removed, the dirt inside the drain pan cannot be confirmed. Therefore, in order to confirm the dirt, the drain pan must be removed from the main body side, and workability is poor. Furthermore, the drain pump that pumps up the drain water is clogged, and a safety device that stops the outdoor unit may be activated.

  This invention is made | formed in view of the situation mentioned above, and it aims at providing the ceiling embedded type air conditioner which can confirm the stain | pollution | contamination inside a drain pan, without removing a drain pan.

The present invention includes a heat exchanger, a drain pan disposed below the heat exchanger, and a drain pump that pumps drain water stored in the drain pan, and the drain pan is resin-molded to store drain water. In a ceiling-embedded air conditioner formed by a drain sheet and a foam covering the lower side of the drain sheet, a storage portion formed by a transparent member in which drain water is stored in the drain sheet is formed. When the storage part penetrates the foam material and removes the decorative panel constituting the ceiling surface, the storage part is disposed at a position exposed to the indoor side, and a drain pump suction port is disposed inside the storage part, said reservoir and said suction port, freely covered removably with a cap member which is foam molding, characterized in that a light source for irradiating light toward the bottom of the reservoir to said drain pump
According to this structure, a transparent storage part can be exposed to the lower side of a drain pan by removing a cap member. Moreover, the suction port of the drain pump can be arranged inside the storage part, and the state of this suction port can also be confirmed.

In this case, it is also possible to form a discharge port for discharging drain water downward at the bottom of the storage unit.
According to this configuration, the drain water that has not been pumped up by the drain pump can be discharged from the discharge port.

Moreover, the said storage part can be comprised with the said drain sheet and another components, and this storage part can also be formed with a transparent member.
According to this structure, it becomes easy to comprise only a storage part with a separate transparent member.

According to this invention, a transparent storage part can be exposed to the lower side of a drain pan by removing a cap member. By storing drain water at the bottom of the reservoir, dust and dirt are most likely to accumulate. Therefore, the bottom of the reservoir can be confirmed from the bottom side of the drain pan, and the necessity of cleaning should be determined according to the level of dirt on the bottom, so that the dirt inside the reservoir can be visually checked without removing the drain pan from the main body side. Can be confirmed. As a result, the workability of confirmation can be improved. In addition, since the state of the suction port of the drain pump can be visually confirmed through a transparent storage part, it is possible to prevent the drain pump from being clogged with dust, etc. by appropriate cleaning, and stable air conditioning operation is possible. Become.
Moreover, since the cap member is formed so as to be detachable, the cap member can be removed when checking for dirt. Therefore, at the time other than the confirmation work, an efficient air-conditioning operation can be performed using the heat insulating property of the foamed material.

  Hereinafter, a ceiling-embedded air conditioner according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a side sectional view of a ceiling-embedded air conditioner according to an embodiment of the present invention.
This ceiling-embedded air conditioner has a sheet metal box-shaped air conditioner main body 1 and is suspended from a ceiling by suspension bolts 2. When the air conditioner body 1 is opened at the bottom and embedded in the ceiling, the opening side faces the room to be conditioned. A motor 5 is fixed inside the air conditioner body 1, and an impeller 7 is attached to the shaft of the motor 5. These constitute the blower 9. A heat exchanger 11 bent in a polygonal shape is disposed so as to surround the blower 9, a drain pan 13 is disposed below the heat exchanger 11, and a bell mouth 14 is attached to the drain pan 13. Yes.
A decorative panel 21 is attached to the lower surface of the air conditioner body 1, and a suction port 22 and an outlet 23 are formed in the decorative panel 21, and a filter 25 is attached to the inside of the suction port 22. ing.

FIG. 2 is a plan view showing the air conditioner main body 1 with the drain pan 13 removed.
The heat exchanger 11 is bent into a substantially pentagonal (polygonal) shape and disposed inside the air conditioner body 1. The three sides 11A, 11B, and 11C of the heat exchanger 11 extend substantially parallel to the three sides 1A, 1B, and 1C of the air conditioner body (housing) 1, and the remaining part 11D At a position corresponding to one side 1D, the housing 1 is configured to project in a triangular shape on one side 1D side. In the space outside the heat exchanger 11, as shown in FIG. 2, a part 11D of the heat exchanger 11 is projected to the housing 1 side. Piping 27 and drain pumps 28 are dispersedly arranged in relatively large spaces S1 and S2 on both sides of the part 11D.
Further, as shown in FIG. 2, an electrical box 45 for the auxiliary heater 43 is attached to the inside of the heat exchanger 11 according to the shape of the auxiliary heater 43 and a part 11D of the heat exchanger 11.

FIG. 3 is a perspective view showing the heat exchanger 11 as a single item.
The heat exchanger 11 is configured by overlapping a fin-and-tube heat exchanger with respect to the air flow direction indicated by a solid line arrow, and each corner A, B, C, D is bent by the same roller (not shown) having a radius R set in a bending roller jig to form a pentagon (polygon). In the heat exchanger 11, the bending start position 11K and the bending end position 11L are connected via a narrow tube plate 11M. Thereby, since the space | interval of the bending start position 11K and the bending end position 11L of the heat exchanger 11 can be approximated, and it can connect with the narrow tube sheet 11M, compared with what connects with a wide tube sheet, The heat transfer area can be increased by that amount.

FIG. 4 is a plan view showing a state in which the drain pan 13 is attached to the air conditioner main body 1 shown in FIG.
The air conditioner main body 1 (indicated by the alternate long and short dash line in FIG. 4) includes a substantially rectangular internal air outlet 41 on four sides, and this internal air outlet 41 communicates with the air outlet 23 of the decorative panel 21 shown in FIG. is doing. 4 shows a state in which the decorative panel 22 (see FIG. 1) is removed and viewed from below. In this state, a cap member 63, which will be described later in detail, is visible, and the cap member 63 is further removed. Thus, a storage unit 59 described later is exposed.

FIG. 5 is a cross-sectional view showing a state in which the drain pan 13 shown in FIG. 4 is cut along the line VV.
This drain pan 13 constitutes substantially the entire upper surface of the drain pan 13, and is a drain pan sheet resin frame 51 (drain sheet 51) that is formed in a concavo-convex shape in a predetermined shape, and a foamed polystyrene covering the lower side of the drain sheet 51 mainly as a heat insulating material 53 is integrally formed. A suction hole 55 that faces the suction port of the blower 9 is formed at a substantially central portion of the drain pan 13, and the bell mouth 14 of the blower 9 is fitted into the suction hole 55. The bell mouth 14 is shown in FIG. As described above, the drain pan 13 is fixed using a plurality of screws 56. Further, the electrical box 45 is fixed to the drain pan 13 using a plurality of screws 58.

FIG. 6 is a plan view of the drain sheet 51 viewed from the heat exchanger 11 side.
As shown in FIG. 6, the drain sheet 51 is formed of a resin having a thickness of about 2 mm, and water is disposed below the central suction hole 55 to which the bell mouth 14 is attached and the heat exchanger 11. Receiving portions 57a to 57e and a storage portion 59 disposed on the upper left side of FIG. 6 are provided. The heights of the bottom surfaces of the water receiving portions 57a to 57e are lowered toward the storage portion 59, and the water condensed in the heat exchanger 11 is dropped on the water receiving portions 57a to 57e, and then the water receiving portion. Water (drain water) dripped along the slope of the bottom surface of 57 flows to the storage part 59.
In FIG. 6, the water flowing from the water receiving portion 57 can also be stored in the left portion 60 a and the upper portion 60 b of the storage portion 59, and the storage portion 59 is filled with drain water. Even in this case, drain water can be stored in the left portion 60a and the upper portion 60b.

7 is a cross-sectional view showing a state cut along line VII-VII in FIG.
The storage part 59 protrudes toward the lower side of the drain sheet 51, and the bottom part 59 a of the storage part 59 is formed at the lowest position of the drain sheet 51. This storage part 59 is formed of a transparent material, and the state inside the storage part 59 can be visually confirmed from the lower side of the drain sheet 51. Further, a drain port 61 is formed so as to protrude further downward from the bottom 59a of the storage unit 59, and the drain port 61 is closed by a detachable lid 62. The lid 62 may be made of a transparent material.

FIG. 8A is a side view of the cap member 63 that covers the reservoir 59 from below, and FIG. 8B is a bottom view of the cap member 63 as viewed from below in FIG.
The cap member 63 is foam-molded with a foamed polystyrene material and has an opening on the upper side. The shape of the inner portion 63a of the cap member 63 is substantially the same as the triangular outer shape of the storage portion 59 and the outer shape of the drain outlet 61. There is no contact.

FIG. 9 is a schematic view of the state cut along the line IX-IX in FIG. 4, and the foamed polystyrene 53 is omitted for simplicity.
A drain pump 28 for pumping up drain water is disposed above the reservoir 59, and the suction port 28 a is located inside the reservoir 59. A drain pump driving means 66 and a drain hose 64 are connected to the drain pump 28. The drain water pumped up by the drain pump 28 is discharged through the hose 64.

  On the other hand, the drain pump 28 is provided with an illuminating means 65 that irradiates the light 67 toward the bottom 59 a of the reservoir 59. The irradiating means 59 may be a general fluorescent lamp, or may be capable of sterilizing a portion of the bottom 59a where dirt is attached by irradiating ultraviolet rays. Further, the certification means 65 may irradiate the suction port 28a of the drain pump 28.

  According to the ceiling-embedded air conditioner according to the embodiment of the present invention, the transparent reservoir 59 can be exposed to the lower side of the drain pan 13 by removing the cap member 63. Without removing from the main body side, the degree of dirt inside the storage portion 59 can be visually confirmed. As a result, the workability of confirmation can be improved. In addition, since the state of the suction port 28a of the drain pump 28 can be visually confirmed through the transparent reservoir 59, it is possible to prevent the drain pump 28 from being clogged with dust and the like by performing appropriate cleaning, and stable air conditioning. Driving is possible.

On the other hand, since the storage part 59 is arranged at the lowest position of the drain sheet 51 and the position where the water dripped into the water receiving parts 57a to 57e flows, the bottom 59a of the storage part 59 has the least dust and dirt. It can be easily deposited. As a result, it is only necessary to confirm the bottom 59a of the reservoir 59 and determine whether or not cleaning is necessary depending on how dirty the bottom 59a is.
Furthermore, since the cap member 63 is formed so as to be detachable, the cap member 63 can be removed when the dirt is confirmed. Therefore, at the time other than the confirmation work, an efficient air-conditioning operation can be performed using the heat insulating property of the foamed material.

Further, since the discharge port 61 for discharging the drain water downward is formed in the bottom 59a of the storage unit 59, the drain water that has not been pumped up by the drain pump 28 can be discharged from the discharge port 61.
Furthermore, since the storage part 59 is arrange | positioned in the position exposed to the indoor side when the makeup | decoration panel 22 which comprises a ceiling surface is removed, the storage part 59 is easily confirmed only by removing the decoration panel 22 Will be able to.

  On the other hand, since the drain pump 28 is provided with the irradiation means 65 for irradiating light toward the bottom 59a of the storage part 59, it is easy to check the dirt inside the storage part 59 by irradiating the storage part 59 with light. it can. Moreover, the bottom 59a can be sterilized by irradiating the bottom 59a of the reservoir 59 with ultraviolet rays.

The best mode for carrying out the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. .
In the present embodiment, the storage portion 59 is formed of a separate member from the drain sheet 51 and only the storage portion 59 is formed of a transparent member. However, the storage portion 59 is formed integrally with the drain sheet 51, and these are integrated. It can also be formed of a transparent member. Thereby, the number of parts can be reduced and the assemblability can be improved.

1 is a cross-sectional view showing an embodiment of a ceiling-embedded air conditioner and a heat exchanger according to the present invention. It is a top view of the air conditioner main body which removed the drain pan. It is a perspective view of a heat exchanger. It is a top view of the air conditioner main body equipped with the drain pan. It is VV sectional drawing of FIG. It is a top view of a drain sheet. It is VII-VII sectional drawing of FIG. (A) is the side view of a cap member, (b) is the figure which looked at (a) from the lower side. It is a figure which shows the IX-IX cross section of FIG. 4 schematically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling embedded type air conditioner 9 Blower 11 Heat exchanger 13 Drain pan 21 Cosmetic panel 22 Suction port 23 Outlet 28 Drain pump 28a Suction port 41 Internal outlet 51 Resin frame for drain pan sheet (drain pan sheet)
53 Styrofoam (foaming material)
55 Suction hole 57a-57e Water receiving part 59 Storage part 60a Left side part 60b Right side part 61 Drain outlet 62 Lid 63 Cap member 63a Inner part 64 Hose 65 Irradiation means 66 Drain pump drive means

Claims (3)

A heat exchanger, a drain pan arranged on the lower side of the heat exchanger, and a drain pump for pumping up drain water stored in the drain pan, wherein the drain pan is a resin-molded drain sheet for storing drain water, In the ceiling-embedded air conditioner formed with a foam material covering the lower side of this drain sheet,
The drain sheet is formed with a storage portion formed of a transparent member that stores drain water, and the storage portion penetrates through the foam material, and when the decorative panel that forms the ceiling surface is removed, the storage portion is exposed to the indoor side. and positioned so as to leave the place suction port of the drain pump inside the reservoir, said reservoir and said suction port, not covering detachably cap member which is foam molded,
A ceiling-embedded air conditioner, wherein the drain pump is provided with a light source that irradiates light toward the bottom of the reservoir .   2. The ceiling-embedded air conditioner according to claim 1, wherein a discharge port for discharging drain water downward is formed at a bottom of the storage unit.   3. The ceiling-embedded air conditioner according to claim 1, wherein the storage unit is configured by a separate part from the drain sheet, and the storage unit is formed of a transparent member.

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