JPH10253089A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner in which a horizontal blade is prevented from being condensed and flexibility of a design is increased with the low cost. SOLUTION: There is provided a drain pan 10 which closes between a heat exchanger 5 and a decorative panel 7 and forms part of a blowoff passage 30 communicating with a blowoff outlet 9. The drain pan 10 is adapted such that a cross section of the blowoff passage 30 is reduced gradually toward the blowoff outlet 9 from an upstream end to prevent air from a wall surface of the blowoff passage 30 from being exfoliated. Thus, air flows smoothly through opposite sides of a horizontal blade 12 to prevent warm air in a room from being entangled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in which dew condensation does not occur on horizontal blades.

[0002]

2. Description of the Related Art Conventionally, there is an air conditioner embedded in a ceiling as shown in FIG. This air conditioner
Turbo fan 3 driven by motor 2 in casing 1
, A heat exchanger 5 and a drain pan 6 are arranged. A decorative panel 7 is fixed to a lower end of the casing 1. This decorative panel 7 is provided with a central suction port 8 and four suction ports 9 around it (see FIG. 3). A suction grill 11 is provided at the suction port 8, and a horizontal blade 12 is
Is provided. The air passing through the suction port 8 is
The air-conditioned air sucked by the turbo fan 3 through the air filter 13 and the bell mouth 15 and further heat-exchanged through the heat exchanger 5 passes through the outlet passage 16 formed by the drain pan 6 and passes through the outlet 9. Blown out from.

[0003]

However, in the above-described ceiling-embedded type air conditioner, the outlet passage 1 by the drain pan 6 is provided.
6 has the same cross-sectional area on the upstream side, and the cross-sectional area of the blow-out passage 16 from the upper end of the drain pan 6 decreases sharply. Therefore, as shown by the arrow in FIG. The air flows, and a separation area A is generated from the upper end of the drain pan 6 on the heat exchanger 5 side to the outlet 9 side of the decorative panel 7. For this reason, there is a problem that the air does not flow much on the back side of the horizontal blade 12, and particularly, in a cooling operation, warm air in the room is entrained in the region B on the back side of the horizontal blade 12, and there is a problem that dew condensation occurs on the horizontal blade 12. .

Therefore, in a conventional air conditioner, a hair-like water-absorbing material is planted on the horizontal blades so that dew is held on the hair-like water-absorbing material.

[0005] However, the air conditioner has the drawback that dust adheres to the flocked portions of the horizontal blades and is easily contaminated, making cleaning difficult and costly. Also,
The planted horizontal blade has a drawback that the degree of freedom in design is low because of restrictions on the color, shape, and the like.

SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner which can prevent dew condensation on horizontal blades and has a large degree of freedom in design and low cost.

[0007]

Means for Solving the Problems To achieve the above object, an air conditioner according to claim 1 has a heat exchanger disposed in a casing and an air outlet in which horizontal blades are disposed.
An air conditioner comprising: a panel attached to the casing; and a closing member that closes a gap between the heat exchanger and the panel and forms a part of an outlet passage connected to the outlet. Is characterized in that the sectional area of the outlet passage is gradually reduced from the upstream end toward the outlet to prevent the wind from separating from the wall surface of the outlet passage.

According to the air conditioner of the first aspect, the cross-sectional area of the outlet passage is gradually narrowed from the upstream end of the closing member that closes the heat exchanger and the panel toward the outlet. By preventing the wind from separating from the wall of the outlet passage, air flows smoothly on both sides of the horizontal blades located at the outlet, and the warm air inside the room is not entrained, so dew condensation occurs on the horizontal blades during cooling operation Nothing.

Therefore, it is not necessary to implant hairs on the horizontal blades, and it is possible to prevent dew condensation on the horizontal blades and reduce costs. Further, the material and color of the horizontal blade are not limited, and the degree of freedom in design is widened.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an air conditioner according to the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 is a cross-sectional view of a main part of an air conditioner of an embedded ceiling type according to an embodiment of the present invention. The ceiling-mounted air conditioner has the same configuration as the ceiling-mounted air conditioner shown in FIG. 2 except for the drain pan.

In FIG. 1, the air conditioner includes a turbo fan driven by a motor (not shown) in a casing 1, and a heat exchanger 5 is arranged around the turbo fan. A decorative panel 7 is provided at the lower end of the casing 1.
Is fixed. Although not shown, the decorative panel 7 is provided with a rectangular inlet at the center, and four outlets 9 along four sides of the inlet. In this outlet 9,
A horizontal blade 12 for controlling the direction of the blown air is arranged, and both ends of the horizontal blade 12 are rotatably attached to the decorative panel 7. Then, a drain pan 1 is placed under the heat exchanger 5.
0 is arranged. This drain pan 10 is connected to the heat exchanger 5
And the decorative panel 7 as a closing member for closing the space. The drain pan 10 forms a part of an outlet passage 30 connected to the outlet 9. The drain pan 1
A curved surface 20 is formed in the bank portion 10a of the drain pan 10 on the side of the outlet passage 30 so that the zero outlet passage 30 gradually reduces the cross-sectional area of the outlet passage 30 from the upstream end toward the outlet 9.

In the air conditioner having the above-described configuration, when performing the cooling operation, the room air is sucked in from the suction port (not shown) of the decorative panel 7, and the cool air, which has been heat-exchanged through the heat exchanger 5, is blown out from the outlet passage 30. The air is blown into the room through the air outlet 9. At this time, the cool air flowing through the outlet passage 30 is applied to the curved surface 20a of the drain pan 10 so that the cross-sectional area of the outlet passage 30 gradually decreases and the tip of the bank 10a of the drain pan 10 becomes thinner. Is formed, the air flows smoothly along the curved surface 20, and the separation of the wind from the wall surface of the blow-out passage 30 is prevented.
No separation area can be formed. Then, the cool air flows smoothly on both sides of the horizontal blade 12, that is, on the front side and the back side.
Therefore, the air smoothly flows on both sides of the horizontal blade 12 and blows out the air from the air outlet 9 without involving the warm air in the room, and there is no mixing of the cool air and the warm air. Absent.

As described above, in the air conditioner, the drain pan 10 that forms a part of the air outlet passage 30 is used.
Since the cross-sectional area of the outlet passage 30 is gradually reduced from the upstream end toward the outlet 9 to prevent separation of wind from the heat exchanger 5, even if the horizontal blades 12 are not planted, the cooling operation can be performed. It is possible to prevent condensation from occurring on the horizontal blades 12. Also,
Since the horizontal blades 12 are not planted, the horizontal blades 12 are hardly soiled, can be easily cleaned, and can reduce the manufacturing cost. In addition, the horizontal blade 12
Since there is no flocking that restricts the material and color of the above, the degree of freedom in design can be improved.

In the above embodiment, the ceiling-mounted type air conditioner has been described. However, the present invention may be applied to a floor-mounted type air conditioner or a wall-mounted type air conditioner. In addition, the closing member is not limited to the drain pan, and may be any member that closes the gap to form the outlet passage.

[0016]

As is apparent from the above description, the air conditioner according to the first aspect of the present invention is disposed between the heat exchanger and the air outlet, and is provided in one of the air outlet passages for blowing air from the heat exchanger to the air outlet. Since the cross-sectional area of the outlet passage gradually decreases from the upstream end toward the outlet to prevent the wind from separating from the wall surface of the outlet passage, the closing member that closes the part has two blades of the horizontal blade. The air flows smoothly on the surface side, and the air is blown out from the air outlet without involving the warm air in the room, so that dew condensation does not occur on the horizontal blades during the cooling operation. Therefore, dew condensation on the horizontal blades can be prevented without implanting hairs on the horizontal blades, and manufacturing costs can be reduced. In addition, there is no restriction on the material and color of the horizontal blade, and the degree of freedom in design can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a ceiling-embedded air conditioner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a conventional ceiling-mounted air conditioner.

FIG. 3 is a view of a decorative panel of the air conditioner as viewed from below.

FIG. 4 is a sectional view of a main part of the air conditioner.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Casing, 2 ... Motor, 3 ... Turbo fan, 5 ...
Heat exchanger, 7: decorative panel, 8: inlet, 9: outlet
10: drain pan, 10a: embankment, 12: horizontal blade,
11 ... suction grille, 13 ... air filter, 15 ... bellmouth.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Taku Hirakawa 1304 Kanaokacho, Sakai City, Osaka Daikin Industries Inside Kanaoka Plant of Sakai Seisakusho Co., Ltd. (72) Inventor Tomohiro Suzuki 1304 Kanaokacho Sakai City, Osaka Daikin Industries, Ltd. Sakai Plant Kanaoka Factory

Claims (1)

[Claims] 1. A heat exchanger arranged in a casing (1)
(5) and an outlet in which the horizontal blades (12) are arranged,
A closing member for closing a panel (7) attached to the casing (1), the heat exchanger (5) and the panel (7), and forming a part of an outlet passage connected to the outlet. In the air conditioner provided with (10), the closing member (10) gradually reduces the cross-sectional area of the blow-out passage from an upstream end toward the blow-out opening, and adjusts the wind from the wall surface of the blow-out passage. An air conditioner characterized by preventing peeling of the air conditioner.