JP3075017B2 - Ceiling-mounted air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A conventional ceiling-mounted air conditioner (for example, JP-A-2-282632) will be described with reference to FIGS. FIG. 4 is a cross-sectional view of an indoor unit of a ceiling embedded type of an air conditioner, and FIG. 5 is a vertical cross-sectional view thereof. In the figure, reference numeral 51 denotes a casing, and a lower surface panel 52 of the casing 51 has an inlet 53 and an outlet 54 formed therein. Further, inside the casing 51, a cross-flow fan 55 for supplying the suction air from the suction port 53 to the blow-out port 54, a heat exchanger 56 installed upstream of the cross-flow fan 55, A drain pan 58 for collecting condensed water generated when air from the port 53 passes through the heat exchanger 56 is provided.

The heat exchanger 56 has a lower end 5.
7 is located above the drain pan 58, and the casing 51 needs to be embedded in the ceiling.
In order to keep the height low, the inclination angle with respect to the lower panel 52 is made as small as possible.

A receiving tray 59 is provided on the entire surface below the heat exchanger 56. The receiving tray 59 receives the drain dripped from the heat exchanger 56 while allowing the suction air from the suction port 53 to flow to the heat exchanger 56 side,
The guide is directed to the drain pan 58. In other words, since the angle of the heat exchanger 56 is small, the pan 59 does not flow down through the heat exchanger 56 to the drain pan 58, but instead drops directly into the room through the suction port 53. This is to prevent it.

[0005]

In the ceiling-mounted type air conditioner, the receiving tray 59 is provided on the entire area below the heat exchanger 56, that is, in the air passage to the heat exchanger 56. There is a problem in that the airflow obstructs the air flow, increases the ventilation resistance, and causes noise. Although the receiving tray 59 allows air to flow to the heat exchanger 56 side, the heat exchanger 56
There is also a disadvantage that it prevents uniform air inflow into the heat exchanger and reduces the performance of the heat exchanger 56.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to reduce the ventilation resistance and drift, thereby improving the performance of a heat exchanger and reducing noise. An object of the present invention is to provide an embedded air conditioner.

[0007]

According to a first aspect of the present invention, there is provided a ceiling-embedded air conditioner in which a suction port and a blow port are formed on a lower surface of a casing, and the suction port is provided inside the casing. A cross-flow fan 5 for sending air from 3 to the outlet 4, a heat exchanger 6 arranged upstream of the cross-flow fan 5, and a drain pan 10 for receiving drain dripping from the heat exchanger 6. In the ceiling-mounted air conditioner provided, the heat exchanger 6 is constituted by an upper heat exchanger 7 and a lower heat exchanger 8, and a lower end 12 of the lower heat exchanger 8 is formed by the cross flow fan 5. And the lower heat exchanger 8 is inclined obliquely upward with respect to the horizontal plane, and the upper heat exchanger 7 that extends further obliquely upward from the upper end of the lower heat exchanger 8 has a lower inclination. Than the inclination of the heat exchanger 8 A drain pan 10 is provided below the lower heat exchanger 8, and a pan 9 is provided below a lower end 11 of the upper heat exchanger 7, and a lower end of the upper heat exchanger 7 is provided. The drain dripping from the part 11 is configured to be collected in the drain pan 10 via the tray 9 , and further, on the outlet 4 side of the casing 1.
The cross flow fan 5 and
Connect fan motor 15 to one end of loss flow fan 5
On the other hand, adjacent to the suction port 3 side of the fan motor 15
A drain pump 14 is provided, and the upper heat exchanger 7
Is inclined to the cross flow fan 5 side.
The electrical component box 16 is arranged in the space formed .

[0008]

In the ceiling-mounted type air conditioner according to the first aspect, the drain generated in the upper heat exchanger 7 has a large inclination, so that the drain of the upper heat exchanger 7 travels along the surface of the heat exchanger and has a lower end. It flows down to the part 11 and drops from the lower end part 11 to the tray 9. Then, it is collected by the drain pan 10 from the receiving tray 9. The drain of the lower heat exchanger 8 is connected to the drain pan 1
It is dripped to 0 as it is. Moreover, the casing 1 is blown out.
On the mouth 4 side, the cross flow fan 5 and the cross
A fan motor 15 connected to one end of the flow fan 5;
The upper heat exchanger 7 is closed on the suction port 3 side.
It is formed by inclining to the loss flow fan 5 side.
The electrical component box 16 is placed in the space to be
Pump 14 is disposed adjacent to the fan motor 15.
Therefore, the casing 1
The longitudinal dimension can be shortened.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a ceiling-mounted air conditioner according to a first embodiment of the present invention. FIG. 1 is an embodiment of the present invention, and is a cross sectional view of an indoor unit of a ceiling embedded type, and FIG. 2 is a longitudinal sectional view thereof.

In FIG. 1, reference numeral 1 denotes a casing, and 2 denotes a lower panel of the casing 1. A suction port 3 and an air outlet 4 are formed in the lower panel 2, and the casing 1 is embedded in the ceiling such that the air inlet 3 and the air outlet 4 face the indoor side.

A cross-flow fan 5 for feeding the air sucked from the suction port 3 to the blow-out port 4 is provided on the side of the blow-out port 4 in the casing 1, Fan motor 15 connected to one end
And are arranged. Further, on the suction port 3 side, a bent heat exchanger 6 installed upstream of the cross flow fan 5, an electrical component box 16 provided in a space upstream of the bent heat exchanger 6, and a fan motor A drain pump 14 is provided adjacent to the drain pump 15, that is, in the lateral direction orthogonal to the rotation axis direction. And the above outlet 4
At the approximate center of the suction port 3 and below, a saucer 9 and a drain pan 10 are arranged below the folding heat exchanger 6.

The bent heat exchanger 6 is bent at a bent portion 11, and the upper heat exchanger 7 above the bent portion 11 is provided.
And a lower heat exchanger 8 at the lower part. The lower end portion 12 of the lower heat exchanger 8 is located on the cross flow fan 5 side, and the bent portion 11 is disposed so as to protrude upstream of the flowing air. That is, the bent heat exchanger 6 is inclined with respect to the horizontal plane, and the upper heat exchanger 7 is inclined such that the inclination angle α of the upper heat exchanger 7 is larger than the inclination angle β of the lower heat exchanger 8 with respect to the horizontal plane. The exchanger 7 is bent toward the cross flow fan 5. Furthermore, the above-mentioned inclination angle α of the upper heat exchanger 7 is such that the condensed water does not directly drop on the heat transfer surface even when oil, dust, etc. adhere to the heat transfer surface, and the lower end of the upper heat exchanger 7 Department,
In other words, the angle is set so as to flow down to the bent portion 11 and drop from the bent portion 11 as drain. In this embodiment, the angle α is set to approximately 60 degrees.

The electrical component box 16 is formed by bending the upper heat exchanger 7 toward the cross flow fan 5 as described above, so that the space formed on the upstream side of the heat exchanger 6 can be formed.
It is arranged to be thinner than the conventional one and to follow the wall surface of the casing 1.

The tray 9 is provided with the upper heat exchanger 7 as in the prior art.
Is not disposed so as to cover the entire area of the lower projection plane, but is disposed below the bent portion 11 and receives the drain from the upper heat exchanger 7 flowing down as described above,
The drain is collected in the drain pan 10.

A drain pan 10 is installed below the drain of the lower heat exchanger 8 to receive the drain of the lower heat exchanger 8, and also receives a drain from the tray 9 as shown in FIG. In addition, it is extended to both sides of the casing 1.

The drain pump 14 is disposed above one side of the drain pan 10 expanded as described above. The drain pump 14 is provided with a float switch 13. When the amount of drain stored in the drain pan 10 reaches a specific water level, the float switch 13 detects this, and based on the detection, the drain pump 14 It is driven to discharge the drain.

FIG. 3 is an explanatory view for explaining a structure for collecting the drain dropped on the tray 9 into the drain pan 10, and shows three types of embodiments. Each of these figures is an arrow view from the cross flow fan 5 side. FIG. 3 (a) shows a state in which the tray 9 is bent so that the center is higher than both sides, so that the drain dropped on the tray 9 flows to both ends, and further provided at both ends. The drain is made to flow into the drain pan 10 through the provided guide 17. In FIG. 3B, the tray 9 is bent as described above so that the drain flows to both end portions, but the guide and the drain 17 on the drain pump 14 side are eliminated. Further, FIG.
Reference numeral 7 denotes a structure in which both the end portions are abolished, and the pan 9 is inclined toward the drain pump 14 without bending the pan 9 so that the drain is dropped only from the end on the drain pump 14 side. .

In the indoor unit having the above structure, when the fan motor 15 is driven and the cross flow fan 5 rotates, air is sucked in from the inlet 3 and blown out from the outlet 4, but in the case of cooling operation. Thus, condensed water is generated on the heat transfer surface of the heat exchanger 6. This condensed water is drained and drops downward, but the upper heat exchanger 7
Since the drain of the upper heat exchanger 7 has a large inclination angle, it flows down the heat transfer surface to the bent portion 11, and from the bent portion 11, the tray 9 disposed below the bent portion 11. Will be dropped. Then, the drain flows down from the tray 9 to both sides of the drain pan 10. In addition, the drain of the lower heat exchanger 8 is dropped directly on the drain pan 10. When the predetermined drain amount is reached, the float switch 13 detects this, and the drain pump 14 drains water.

Since the angle of inclination of the upper heat exchanger 7 is increased so that the drain is dripped from below the bent portion 11, the tray 9 need only be provided below the bent portion 11. It is not necessary to provide the heat exchanger so as to cover the entire area of the lower projection plane as in the conventional case. Therefore, it is possible to alleviate the air flow obstruction and the drift of the air flowing into the heat exchanger due to the presence of the receiving tray as in the related art, thereby improving the performance of the heat exchanger and reducing the noise.

The electrical component box 16 is arranged in a space formed by bending the upper heat exchanger 7 toward the cross flow fan 5. From this, the drain pump 14 which was conventionally provided in the direction of the rotation axis of the cross flow fan 5 on the outlet 4 side can be arranged adjacent to the fan motor 15 on the suction port 3 side. Therefore, the longitudinal dimension of the casing 1 can be shortened by the dimension of the drain pump 14, and the apparatus can be made compact.

Although the above embodiment shows an example in which the bent heat exchanger 6 is used, the upper heat exchanger 7 and the lower heat exchanger 8 are used.
The present invention can also be implemented in a heat exchanger having a configuration in which the heat exchanger is separated from the above.

[0022]

As described above, in the ceiling-mounted type air conditioner according to the first aspect, since the obstacle of the air distribution caused by the receiving pan can be reduced, the amount of air flow can be increased and the drift of the air can be reduced. Therefore, the performance of the heat exchanger can be improved, and the noise caused by the flow of air can be reduced. Moreover,
The longitudinal dimension of the casing can be shortened compared to the conventional case
This makes it possible to reduce the size of the device.

[Brief description of the 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 longitudinal sectional view of the embodiment.

FIG. 3 is an explanatory view for explaining a structure in which drain dropped into a saucer of the above-described embodiment flows into a drain pan, and FIG.
Is an explanatory view showing a type in which a guide and a tray are provided on both sides of a tray, (b) is an explanatory view showing a type in which a guide and a tray are provided on only one side of the tray, and (c) is a guide. The explanatory diagram which shows the type which does not have a toy is shown, respectively.

FIG. 4 is a cross-sectional view for explaining a conventional example.

FIG. 5 is a longitudinal sectional view of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 3 Inlet 4 Outlet 5 Cross flow fan 6 Breaking heat exchanger 7 Upper heat exchanger 8 Lower heat exchanger 9 Receiving tray 10 Drain pan 11 Bent part (lower end part) 12 Lower end part 14 Drain pump 15 Fan motor 16 Electrical equipment Product box

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 1/00 361

Claims (1)

(57) [Claims] An inlet (3) and an air outlet (4) are formed in a lower surface (2) of a casing (1), and air from the inlet (3) is supplied inside the casing (1). A cross flow fan (5) sent to the outlet (4), a heat exchanger (6) arranged upstream of the cross flow fan (5), and a drain dripping from the heat exchanger (6). In the ceiling-mounted type air conditioner provided with the drain pan (10), the heat exchanger (6) is constituted by an upper heat exchanger (7) and a lower heat exchanger (8), and the lower heat exchange is performed. The lower end portion (12) of the heat exchanger (8) is located on the side of the cross flow fan (5), and the lower heat exchanger (8) is inclined obliquely upward with respect to a horizontal plane, so that the lower heat exchanger ( The upper heat exchanger (7) extending further obliquely upward from the upper end of 8) Is the lower heat exchanger (8)
And a drain pan (10) is provided below the lower heat exchanger (8).
A saucer (9) is provided below the lower end (11) of the upper heat exchanger (7), and drain dripping from the lower end (11) of the upper heat exchanger (7) is placed in the saucer (9). ) via arranged to recover to the drain pan (10), and
In addition, the outlet (4) of the casing (1) is
Place the sflow fan (5) and
A fan motor (15) is connected to one end of the low fan (5)
On the other hand, on the suction port (3) side of the fan motor (15)
A drain pump (14) is arranged adjacent to
Tilt the upper heat exchanger (7) toward the cross flow fan (5)
The electrical component box (1
An air conditioner embedded in a ceiling, wherein 6) is arranged .