JPH06307667A - Ceiling-buried type air conditioner - Google Patents

Abstract

PURPOSE:To simplify and to improve operability of maintenance by effectively utilizing a space in a casing. CONSTITUTION:A heat exchanger chamber and a machine chamber are provided in a casing 1. A crossflow fan 7 for feeding the air from a suction port 5 to a diffuser 6, a heat exchanger 8 disposed at an upstream side of the fan 7 and a drain pan 19 for receiving drain from the exchanger 8 are provided in the exchanger chamber 2. An electric component box 12 containing electric components is disposed in an upstream side space of the exchanger 8. A fan motor to be coupled to one end side of the fan 7 is disposed at the diffuser 6 side in the machine chamber 3. Further, a drain pump for discharging drain in the pan 9 is disposed adjacent to the port 5 side of the fan motor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-embedded air conditioner.

[0002]

2. Description of the Related Art Regarding a conventional ceiling-embedded air conditioner,
This will be described with reference to FIGS. 3 and 4. FIG. 3 is a transverse sectional view of a ceiling-embedded indoor unit of an air conditioner, and FIG. 4 is a longitudinal sectional view thereof. In the figure, 51 is a casing, and 54 is a lower panel of this casing 51.
A heat exchanger chamber 52 and a machine chamber 53 are formed in the casing 51, and a suction port 55 and a blowout port 56 are formed in the lower panel 54 on the heat exchanger chamber 52 side.

On the side of the heat exchanger chamber 52, the outlet 5
The cross flow fan 57, which is arranged on the 6 side and supplies the air from the suction port 55 to the air outlet 56, the heat exchanger 58 installed on the upstream side of the cross flow fan 57, and the suction port. Condensed water generated when the suction air from 55 passes through the heat exchanger 58 is stored as a drain, and a part of the drain pan 59 also extends to the machine room 53 side. Outlet 5 on the machine room 53 side
A fan motor 60 connected to one end of the cross-flow fan 57 and a drain pump 61 arranged near the outside of the fan motor 60 in the direction of the rotation axis are provided on the sixth side. Has been. On the other hand, an electric equipment box 62 is provided on the suction port 56 side, and the electric equipment box 62 occupies the remaining space of the machine room 53. The drain pump 61 is provided with a float switch 63 for detecting the amount of drain in the drain pan 59.

[0004]

In the above-mentioned ceiling-embedded air conditioner, the fan motor 60, the drain pump 61, and the electrical component box 62 are installed on the machine room 53 side, so that the machine room 53 is installed. There is no choice but to widen the space. That is, the longitudinal dimension of the casing 51 must be increased.

The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is a ceiling-embedded type in which the space in the casing can be effectively utilized and the apparatus can be made compact. To provide an air conditioner.

[0006]

Therefore, in the ceiling-embedded air conditioner according to claim 1, a suction port 5 and a blow-out port 6 are formed on the lower surface 4 of the casing 1, and the suction port 5 is provided inside thereof. In a ceiling-embedded air conditioner having a cross-flow fan 7 for sending air from the outlet to the blow-out port 6 and a heat exchanger 8 arranged on the upstream side of the cross-flow fan 7,
An electric component box 12 accommodating each electric component is arranged in the flow path from the suction port 5 to the heat exchanger 8.

The ceiling-embedded air conditioner according to claim 2 is
A fan motor 22 connected to one end side of the cross flow fan 7 is arranged on the outlet 6 side, while a drain pump 23 for discharging the drain in the drain pan 19 is arranged adjacent to the fan motor 22 on the suction port 5 side. It is characterized by having been placed.

Further, in the ceiling-embedded air conditioner of claim 3, the electric component box 12 is arranged so as to be along the vertical surface 20 of the casing 1 on the suction port 5 side, and the electric component box 12 is The upper part accommodates components that require space such as a transformer, while the lower part accommodates components that do not require space, such as a printed board, so that the electrical component box 12 has a shape such that the upstream side is thin and the downstream side is thick. It is characterized by being.

In the ceiling-embedded air conditioner of claim 4, the side wall surface 17 of the electrical component box 12 facing the flow path extends from the lower end portion 15 to the upper end portion 16 in the direction of the heat exchanger 8. The feature is that it is composed of a smoothly curved surface.

[0010]

In the ceiling-embedded air conditioner according to claim 1, since the electric component box 12 is arranged in the upstream space of the heat exchanger 8, only the space for the electric component box 12 is larger than the conventional one. The internal space of the casing 1 can be effectively utilized.

In the ceiling-embedded air conditioner of the second aspect, the fan motor 22 and the drain pump 23 are arranged side by side in the lateral direction, so that the longitudinal dimension of the casing 1 can be shortened as compared with the conventional case.

Further, in the ceiling-embedded air conditioner according to the third aspect, the electric component box 12 is arranged so as to be along the vertical surface 20 on the suction port 5 side. The air that flows in to the heat exchanger 8 does not easily become an obstacle. Further, since the upstream side of the electric component box 12 is thin and the downstream side is thick, the obstacle to the circulating air can be suppressed low.

In the ceiling-embedded air conditioner of claim 4, since the side wall surface 17 of the electric component box 12 facing the flow path is a curved surface that smoothly curves, it flows upward from the suction port 5. The incoming air is guided by the side wall surface 17, changes its direction smoothly, and flows toward the heat exchanger 8.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the ceiling-embedded air conditioner of the present invention will be described in detail with reference to the drawings. FIG. 1 is an embodiment of the present invention and is a transverse sectional view of a ceiling-embedded indoor unit, and FIG. 2 is a longitudinal sectional view thereof.

In the figure, 1 is a casing, and a heat exchanger chamber 2 and a machine chamber 3 are formed in this casing 1. Reference numeral 4 is a bottom panel of the casing 1. A suction port 5 and a blowout port 6 are formed on the heat exchanger chamber 2 side of the lower panel 4, and the casing 1 is installed in the ceiling so that the suction port 5 and the blowout port 6 face the indoor side. Embedded in.

The arrangement in the casing 1 will be described. First, on the side of the outlet 6 on the side of the heat exchanger chamber 2, the air that is installed above the outlet 6 and is sucked from the inlet 5 is installed. A cross flow fan 7 that feeds the outlet 6.
And a bent heat exchanger 8 installed on the upstream side of the cross flow fan 7, while an electric component box 12 is installed on the suction port 5 side, that is, on the upstream side of the bent heat exchanger 8. Has been done. A saucer 18 and a drain pan 19 are arranged substantially in the center between the air outlet 6 and the suction inlet 5.

The bent heat exchanger 8 is bent at a bent portion 9, and is composed of an upper heat exchanger 10 above the bent portion 9 and a lower heat exchanger 11 below the bent portion 9. The lower end of the lower heat exchanger 11 is located on the side of the cross flow fan 7, and the bent portion 9 projects to the upstream side of the circulating air. That is, the folding heat exchanger 8 is inclined with respect to the horizontal plane, and the upper heat exchanger 10 is arranged so that the inclination angle of the upper heat exchanger 10 is larger than the inclination angle of the lower heat exchanger 11. It is bent to the cross flow fan 7 side. By bending in this manner, a space for installing the electric component box 12 can be secured between the folding heat exchanger 8 and the suction port side vertical surface 20 of the casing 1. .

Various electrical components are stored in the electrical component box 12, and the electrical component box 12 is introduced from the suction port 5 and bent to the passage side of the air flowing to the heat exchanger 8. In order to prevent it from protruding, a space-saving component such as the power transformer 13 is stored in the upper portion of the electrical component box 12, while a space-saving component such as the printed board 14 is stored in the lower portion. , The electrical equipment box shape is configured such that the lower end portion 15 on the upstream side is thinner and the upper end portion 16 on the downstream side is thicker with respect to the air from the suction port 5.
Furthermore, the right side surface and the upper surface of the electrical component box 12 are the casing 1
The vertical surface 20 and the ceiling surface 21 are arranged so as to be in contact with each other. In addition, in order to make the left side surface 17 of the electric component box 12 on the side of the folded heat exchanger 8 function as a ventilation guide for the inflowing air, it is smoothed toward the upper heat exchanger 10 from the lower end 15 to the upper end 16. The curved surface is curved.

The drain pan 19 is the lower heat exchanger 11 described above.
And the drain 18 from the pan 18 for the upper heat exchanger 10. The drain pan 19 is installed not only below the lower heat exchanger 11 but also in the machine room 3 over substantially the entire area.

Next, in the machine room 3, a fan motor 22 connected to one end of the cross flow fan 7 in the direction of the rotation axis of the cross flow fan 7 is arranged on the blower outlet 6 side, while on the suction port 5 side, the inside of the drain pan 19 is arranged. Drain pump 23 for discharging the drain of
And a float switch 24 that detects the amount of drain in the drain pan 19 and sends a signal to the drain pump 23. The drain pump 23 is the drain pan 1
9 is installed above the heat exchanger chamber 2 and is arranged so as not to project to the outside of the fan motor 22. Further, the float switch 24 is also a heat exchanger of the drain pump 23. It is connected to the chamber 2 side.

In the indoor unit having the above structure, the electrical component box 12 is arranged in the space between the vertical surface 20 on the inlet side of the casing 1 and the folding heat exchanger 8. That is, since the electrical equipment box 12 is placed in the heat exchanger chamber 2 instead of being placed in the machine room 3 as in the conventional case, a space corresponding to the space of the electrical equipment box 12 in the machine room 3 side is larger than that in the conventional case. Can be effectively utilized, and since the electric component box 12 is also cooled by the air from the suction port 5, the cooling effect can be improved.

Further, the drain pump 23, which is conventionally arranged outside the fan motor 22 in the direction of the rotation axis, is provided in the space where the electric component box 12 is conventionally installed, that is, on the suction port 5 side. Since 23 is arranged close to the heat exchanger chamber 2, the longitudinal dimension of the machine chamber 3 is shortened by the amount of the drain pump 23 as compared with the conventional case, and the apparatus can be made compact.

Further, the float switch 24 is not installed outside the fan motor 22 on the side of the outlet 6 as in the conventional case, but is arranged so as to be close to the heat exchanger chamber 2 on the side of the inlet 5. Therefore, the float switch 2
When inspecting the operation of 4 or the like, it can be inspected simply by removing the lower panel 4, and it is not necessary to remove the drain pan 19 as in the conventional case, which facilitates the maintenance work.

The electric component box 12 is brought into contact with the vertical surface 20 and the ceiling surface 21 on the suction port 5 side so as to form a large space on the upstream side of the heat exchanger 8 and the upper corner side of the casing 1 is contacted. In addition to storing the space-saving components such as a power transformer in the upper part of the electrical equipment box 12, the electrical equipment box 12 stores the space-saving components in the lower part. The lower end portion 15 side is thin and the upper end portion 16 side is thick. Therefore, the air that flows in from the suction port 5 and flows into the folding heat exchanger 8 does not easily become an obstacle, and an increase in ventilation resistance is suppressed.

In the electrical equipment box 12, the left side surface 17 facing the bent heat exchanger 8 side is formed by a curved surface that smoothly curves toward the upper heat exchanger 10 side from the lower end 15 to the upper end 16. Therefore, the air flowing upward from the suction port 5 is guided to the side wall surface 17 and smoothly turned, and is guided to the heat exchanger 8 side, thereby further reducing the ventilation resistance. In addition, the cooling effect of the electrical component box 12 can be improved.

[0026]

As described above, in the ceiling-embedded air conditioner according to the first aspect of the present invention, the electric component box is arranged in the space on the upstream side of the heat exchanger, so that the internal space of the casing can be effectively utilized accordingly. .

According to the second aspect of the present invention, the size of the machine room in the longitudinal direction can be shortened, so that the apparatus can be made compact.

According to the third aspect of the present invention, the electric component box is less likely to obstruct the air flowing from the suction port and flowing to the heat exchanger, so that the ventilation resistance can be suppressed to be low.

Next, according to the fourth aspect, the side wall surface of the electric component box facing the heat exchanger side can be made to function as a ventilation guide for guiding the air from the suction port to the heat exchanger side. Therefore, the ventilation resistance can be suppressed and the cooling effect can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of a ceiling-embedded air conditioner of the present invention.

FIG. 2 is a vertical sectional view of the above embodiment.

FIG. 3 is a transverse sectional view for explaining a conventional example.

FIG. 4 is a vertical sectional view of the conventional example.

[Explanation of symbols]

 1 casing 2 heat exchanger room 3 machine room 4 casing lower surface 5 suction port 6 blowout port 7 cross flow fan 8 heat exchanger 15 lower end part 16 upper end part 19 drain pan 20 vertical surface of suction port 22 fan motor 23 drain pump 24 drain amount Detector

Claims (4)

[Claims] 1. A suction port (5) and an air outlet (6) are formed on a lower surface (4) of a casing (1), and air from the air inlet (5) is introduced into the air outlet (5). In the ceiling-embedded air conditioner having a cross-flow fan (7) sent to 6) and a heat exchanger (8) arranged on the upstream side of the cross-flow fan (7), the suction port (5) is provided.
An electric component box (12) accommodating each electric component is arranged in a flow path from the heat exchanger to the heat exchanger (8). 2. A drain pump (23) for discharging a drain in a drain pan (19) while a fan motor (22) connected to one end side of the cross flow fan (7) is arranged on the blower outlet (6) side. ) Is the fan motor (22)
The ceiling-embedded air conditioner according to claim 1, wherein the air conditioner is disposed adjacent to the air-conditioning unit on the suction port (5) side. 3. The electric component box (12) is arranged along the vertical surface (20) of the casing (1) on the suction port (5) side, and at the upper part of the electric component box (12). While storing parts that require space such as transformers,
A space-saving component such as a printed board is stored in the lower part, and the shape of the electrical component box (12) is thin on the upstream side,
The ceiling-embedded air conditioner according to claim 1, wherein the downstream side is thickened. 4. The side wall surface (17) of the electrical component box (12) facing the flow path is arranged from the lower end portion (15) to the upper end portion (1).
The ceiling-embedded air conditioner according to claim 3, wherein the ceiling-embedded air conditioner has a curved surface that smoothly curves toward the heat exchanger (8) toward 6).