JP3067444B2 - 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 an in-ceiling type air conditioner provided behind a ceiling with an inlet and an outlet facing a ceiling opening.

[0002]

2. Description of the Related Art Conventionally, as this type of air conditioner, for example, one shown in FIG.
No. 82632). In this air conditioner, a heat exchanger 12 having a drain pan 13 at a lower edge and a fan 14 are housed in a casing 11, and a suction port 1 on a lower surface of the casing 11 is provided.
5 and the outlet 16 face the ceiling opening A and are embedded in the ceiling. Since the space above the ceiling is narrow, the casing 11
Of the heat exchanger 12 to reduce the height of the
° or less, and a drain receiver 17 is provided over the entire lower surface of the heat exchanger 12 to receive the condensed water dripping from the heat exchanger 12 due to this arrangement.
Is provided. The drain receiver 17 is provided with a guide having a U-shaped cross section and a slug 18 at both ends of a drain pan 13 corresponding to the front and rear in a direction perpendicular to the paper surface of FIG.
8, a plurality of triangular brackets 19 provided in pairs,
Receiving tray surface 20a and rising rib 20b inclined counterclockwise
A plurality of water receivers 20 and 20 are horizontally arranged, and all the dew condensation water dripped vertically from the lower surface of the heat exchanger 12 is received by the receiving plate surface 20a, and the rising ribs 20b are formed.
The guide at the both ends leads to the tray 18 and then to the drain pan 13 for collection.

[0003]

However, in the above-mentioned conventional air conditioner, the lower surface of the heat exchanger 12 which is laid at 45 ° or more, although the space between the receiving surfaces 20a is the same as the pitch of the bracket 19, is provided. Since the drain receiver 17 covers the whole, the ventilation resistance on the suction port 15 side is considerably increased, and as a result, there is a disadvantage that the amount of air blow per fixed number of rotations of the fan 14 is reduced and the noise is increased. Further, the reduction in the amount of blown air reduces the heat exchange efficiency of the heat exchanger 12, and requires a heat exchanger having a large area, so that the casing 11 cannot be downsized.

Therefore, an object of the present invention is to reduce the ventilation resistance by devising the shape of the heat exchanger so that the dew point of the condensed water is limited to a small range, thereby reducing the size of the heat exchanger while reducing the air flow. An object of the present invention is to provide a ceiling-mounted air conditioner that can increase the exchange efficiency and reduce noise.

[0005]

In order to achieve the above object, a ceiling-mounted air conditioner according to the present invention comprises a drain pan 13, a heat exchanger 10, and a fan 1 as shown in FIG.
4 is housed in a casing 11, and in the ceiling-mounted air conditioner provided behind the ceiling with the suction port 15 and the air outlet 16 on the lower surface of the casing 11 facing the ceiling opening A, the heat exchanger 10 includes: A first inclined portion 1 extending obliquely upward from the lower edge 10a, and a second inclined portion 2 having a predetermined inclination;
The lower edge 10a of the first inclined portion 1 is connected to the drain pan 1
3, a drain receiver 5 for collecting dew water dripping from a lower edge 2 a of the second inclined portion 2 and guiding the collected water to the drain pan 13 is provided , and the drain receiver 5 is located below the second inclined portion 2.
A receiving tray 5a for receiving dew water dripping from the edge 2a;
A pair of plans for connecting both ends of the tray 5a to the drain pan 13
It is characterized by consisting of the inner and the 5b . Further, the second inclined portion 2 of the heat exchanger 10 is disposed substantially parallel to the first inclined portion 1, and an upper edge 1 b of the first inclined portion 1 and a lower edge 2 a of the second inclined portion 2 are The condensed water connected by the third inclined portion 3 and dropped from the lower edge 3 a of the third inclined portion 3 may be collected by the drain receiver 5. Alternatively, as illustrated in FIG. 2, the second inclined portion 2 of the heat exchanger 10 is disposed substantially parallel to the first inclined portion 1, and the upper edge 1 b of the first inclined portion 1 and the second inclined portion May be connected to the lower edge 2a by a partition plate 22.

[0006]

In the air conditioner according to claim 1, the heat exchanger 10 in the casing 11 installed behind the ceiling works.
When the fan 14 is driven, the room air sucked from the suction port 15 facing the ceiling opening A on the lower surface of the casing 11 is
The air is cooled by the heat exchanger 10, is pressure-fed by the fan 14, becomes conditioned air, and is blown into the room from the outlet 16. At this time, the moisture contained in the room air is condensed on the surface of the heat exchanger 10 as dew water with cooling. The condensed condensed water flows downward along these inclined portions 1 and 2 without dripping immediately because the heat exchanger 10 has the first inclined portion 1 and the second inclined portion, The lower end 10a of the first inclined portion 1 is dropped and collected on the drain pan 13 or the lower end 2a of the second inclined portion 2 is dropped and received by the receiving tray 5a of the drain receiver 5, and then both ends of the receiving tray 5a Of 1
It is guided by the pair guide 5b and collected by the drain pan 13 . Thus, the tray 5a of the drain receiver 5 is heat-exchanged.
Under the second inclined portion 2, not on the entire surface of the vessel 10 on the suction port side.
The tray 5a is provided only on the edge 2a, and the tray 5a is
Since the guide 5b communicates with the drain pan 13 , the ventilation resistance is reduced, and the heat exchanger 10 is bent, so that the area of the heat exchanger 10 can be increased even with a small casing 11. Therefore, while reducing the size of the air conditioner, the amount of air blown by the fan 14 and the heat exchange efficiency of the heat exchanger 10 can be increased by reducing the ventilation resistance, and noise can be reduced.

In the air conditioner according to the second aspect, the second inclined portion 2 of the heat exchanger 10 is disposed substantially parallel to the first inclined portion 1, and the upper edge 1 b of the first inclined portion 1 and the second Since the lower end edge 2a of the inclined portion 2 is connected by the third inclined portion 3, dew condensation condenses on the surface of each of the inclined portions 1, 2, 3 and the condensed water is directly or drained in the same manner as described above. Drain pan 1 through 5
3, the effect of miniaturizing the air conditioner, increasing the heat exchange efficiency, and reducing the noise is also exerted. In addition, since the heat exchange area is large, the cooling capacity can be increased. In the air conditioner according to the third aspect, the upper edge 1b of the first inclined portion 1 and the lower edge 2a of the second inclined portion 2 of the heat exchanger are connected by the partition plate 22, so that the above-described downsizing and the like can be achieved. And the cooling capacity is reduced, but there is an advantage that the cost can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. FIG. 1 is a longitudinal sectional view showing an example of an in-ceiling type air conditioner according to claim 2. This air conditioner has the same structure as that of FIG. 3 except that the shapes of a heat exchanger and a drain receiver are different. The basic configuration is the same as that of the conventional example described above, and the same members are denoted by the same reference numerals. That is, the air conditioner includes a drain pan 13 and a heat exchanger 10 with a lower edge 10a facing the drain pan 13.
Then, the fan 14 is accommodated in the casing 11, and the suction port 15 and the air outlet 16 on the lower surface of the casing 11 face the ceiling opening A and are arranged behind the ceiling.

The heat exchanger 10 includes a first inclined portion 1 extending obliquely upward from the lower edge 10a, a second inclined portion 2 arranged substantially in parallel with the first inclined portion 1, and a first inclined portion 2. Part 1
And a third inclined portion 3 connecting the lower edge 2a of the second inclined portion 2 to the upper edge 1b of the second inclined portion 2. Then, the upper edge 2b of the second inclined portion 2 is brought into contact with the edge 4a of the Styrofoam scroll 4 mounted on the inner periphery of the casing 11, and the first, second, and third inclined portions 1, 2, and 3 are inclined at approximately 60 ° (θ = 60 °) with respect to the horizontal plane so as to prevent the condensation water from dropping, and are disposed so as to cross the ventilation passage between the suction port 15 and the fan 14. Each of the inclined portions 1, 2, and 3 is a plate-like body having a fin tube 21. Also, the lower end edges 2a, 3a of the second and third inclined portions 2, 3 adjacent to each other in a V-shape.
A receiving tray 5a for receiving the condensed water dripping from the lower edge.
And a tray 5 corresponding to the front and rear in a direction perpendicular to the plane of FIG.
a pair of guides that connect both ends of a to the drain pan 13
Is provided. Drain pan 13
Is a plate material 13a such as a plastic molded product forming a water reservoir.
And thermal insulation and cushioning material 1 made of polystyrene to cover this lower surface
3b. The suction grille 6 is provided at the suction opening 15.
And a filter 7, and a vertical flap 8 and a horizontal flap 9 for changing the wind direction are provided at the outlet 16.

The ceiling-embedded air conditioner having the above structure operates as follows. When the heat exchanger 10 in the casing 11 installed above the ceiling operates and the fan 14 is driven, the indoor air sucked through the filter 7 from the suction port 15 facing the ceiling opening A on the lower surface of the casing is subjected to heat exchange. The air is cooled by the vessel 10, is pressure-fed by the fan 14, becomes conditioned air, and is blown into the room from the outlet 16. At this time, the moisture contained in the room air becomes condensed water on the surfaces of the inclined portions 1, 2, and 3 of the heat exchanger 10 and condenses with cooling. The condensed condensed water has a heat exchanger 10 including a first inclined portion 1, a third inclined portion 3 and a second inclined portion 2 that follow the V-shape from the upper end edge 1 b, and these inclined portions 1, 2. 2 and 3 are each inclined at a steep slope of approximately 60 °, so that they flow downward along each of the inclined portions 1, 2, and 3 without dripping immediately, and drain from the lower edge 10a of the first inclined portion 1 to the drain pan. 13 and are collected by dropping from the lower edges 2a and 3a of the second and third inclined portions 2 and 3 and are received by a drain receiver 5 provided thereunder. It is collected here.

As described above, the drain receiver 5Saucer 5a
The entire surface of the heat exchanger 10 on the suction port side as in the conventional example of FIG.
Not on the lower edge 2a of the second inclined portion 2,the above
Drain pan 5a with a pair of guides at both ends and 5b
Communicating with 13So that ventilation resistance is reduced
Since the heat exchanger 10 is bent at two points,
Even if the height and length of the casing 11 are small, the heat exchanger 1
It can be large area. Therefore, the small size of the air conditioner
And the same rotation due to reduced ventilation resistance
Increase in the amount of air blown by the fan 14
Increased heat exchange efficiency and reduced noise
You. Further, the first, second, and third inclined portions 1, 2, and
3 is a plate-like body having fin tubes 21
As a result, the heat exchange area is increased, and the cooling capacity can be increased.
You. In the above embodiment, the heat exchanger 10 is bent at two places.
And the first, second, and third inclined portions 1, 2, and 3
2. Dowels are provided only at the lower edges 2a, 3b of the third inclined portions 2, 3.
Since the wrench 5 is provided, the ventilation resistance is reduced and heat exchange is performed.
That both areas can be increased as much as possible.
There are advantages. In addition, each inclined part 1,2,3 has a steep angle of 60 °.
The condensate water from other places than the bottom edge
Dropping can be reliably prevented.

FIG. 2 is a longitudinal sectional view showing an example of the ceiling-mounted air conditioner according to the third aspect. In this air conditioner, the third inclined portion 3 having the fin tube 21 described in FIG. 1 is used as a partition plate 22 without a fin tube, and the upper edge 1b of the first inclined portion and the second inclined portion are formed by the partition plate 22. Are connected to the lower end edge 2a of the lower end of the main body. Therefore, in this air conditioner, since only the first and second inclined portions 1 and 2 of the heat exchanger are formed of plate-like bodies having the fin tubes 21, the same air conditioner as described in the embodiment of FIG. In addition to the effects of miniaturization, increase of heat exchange efficiency, and reduction of noise, there is an advantage that the cooling capacity is reduced but the cost can be reduced.

The ceiling-mounted type air conditioner according to the first aspect of the present invention includes the above-described second and third aspects, and differs from the above-described embodiment in that the air-conditioning apparatus according to the present invention is adapted to the required cooling capacity. Thus, the first, second, and third inclined portions can be arbitrarily selected, and, for example, the first and third inclined portions can be plate-like members having fin tubes to form an inverted V-shaped heat exchanger. . In addition, the heat exchanger of the ceiling-embedded air conditioner of the present invention further includes an inverted V-shaped fourth end on the upper end edge 2b of the second inclined portion 2 of the embodiment.
An inclined portion may be provided, and a similar drain receiver may be provided at the lower edge. In addition, the inclination of each inclined portion is set to 6
The angle may be other than 0 °. In these cases, the same effects as described above can be obtained.

[0014]

As is apparent from the above description, the ceiling-embedded air conditioner of the present invention includes a heat exchanger housed together with a fan and a drain pan in a casing having an inlet and an outlet facing the ceiling opening. A first inclined portion extending obliquely upward from the lower edge, a second inclined portion having a predetermined inclination, and a drain receiver for collecting dew condensation water dripping from a lower edge of the second inclined portion and guiding the water to the drain pan. The drain receiver 5 is provided with the second
Receiving the dew condensation water dripping from the lower edge 2a of the inclined portion 2
The tray 5a and both ends of the tray 5a communicate with the drain pan 13.
Since the guide is composed of a pair of guides and the drain 5b , the installation location of the drain receiver is limited to a small area, the ventilation resistance is reduced, and the air flow of the fan and the heat of the heat exchanger are reduced while reducing the size of the air conditioner. Exchange efficiency can be increased and noise can be reduced.
Further, the second inclined portion of the heat exchanger is disposed substantially parallel to the first inclined portion, and an upper edge of the first inclined portion and a lower edge of the second inclined portion are connected by a third inclined portion. If the condensed water dripping from the lower end edge of the third inclined portion is collected by the drain receiver, the heat exchange area can be increased and the cooling capacity can be increased. Furthermore, if the second inclined portion of the heat exchanger is arranged substantially parallel to the first inclined portion and the upper edge of the first inclined portion and the lower edge of the second inclined portion are connected by a partition plate, the cooling capacity can be improved. Is reduced, but costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of an embedded ceiling air conditioner of the present invention.

FIG. 2 is a longitudinal sectional view showing another embodiment of the embedded ceiling air conditioner of the present invention.

FIG. 3 is a longitudinal sectional view showing a conventional ceiling-mounted air conditioner.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st inclined part, 1b ... Upper edge, 2 ... 2nd inclined part, 2a ...
Lower edge, 2b upper edge, 3rd inclined portion, 3a lower edge,
5 ... drain receiver, 5a ... tray, 5b ... guide and saucer, 10 ...
Heat exchanger, 10a: lower edge, 11: casing, 13 ...
Drain pan, 14 fan, 15 suction port, 16 outlet, 21 fin tube, 22 partition plate.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 F24F 1/00 361 F24F 13/30

Claims (3)

(57) [Claims] 1. A drain pan (13) and a heat exchanger (10).
And a fan (14) housed in a casing (11), and a suction opening (15) and an air outlet (16) on the lower surface of the casing (11) facing the ceiling opening (A). In the embedded air conditioner, the heat exchanger (10) includes a first inclined portion (1) extending obliquely upward from the lower edge (10a) and a second inclined portion (2) having a predetermined inclination. And a lower edge (10a) of the first inclined portion (1).
Faces the drain pan (13), and the second inclined portion (2)
Lower edge a was collected condensed water dripping from (2a) receiving drain leading to the drain pan (13) (5) provided, above the drain of
The receiver (5) receives a drop from the lower edge (2a) of the second inclined portion (2).
Receiving tray (5a) for receiving dew condensation water, and receiving tray (5a)
And a pair of guides that connect both ends of the
(5b) A ceiling-mounted air conditioner characterized by comprising: 2. A second inclined portion (2) of the heat exchanger (10).
Is disposed substantially parallel to the first inclined portion (1), and the first
The upper edge (1b) of the inclined portion (1) and the lower edge (2) of the second inclined portion (2)
a) with a third inclined portion (3), and the third inclined portion (3)
The condensed water dripping from the lower edge (3a) of the
The ceiling-mounted air conditioner according to claim 1, wherein (5) collects the air. 3. The second inclined portion (2) of the heat exchanger (10).
Is disposed substantially parallel to the first inclined portion (1), and the first
The upper edge (1b) of the inclined portion (1) and the lower edge (2) of the second inclined portion (2)
2. The ceiling-embedded air conditioner according to claim 1, wherein a) and a) are connected by a partition plate (22).