JP3081480B2 - 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 air conditioner in which a heat exchanger and a blower are arranged in a ventilation path.

[0002]

2. Description of the Related Art An air conditioner in which a heat exchanger and a blower are arranged in a ventilation path is described in, for example, Japanese Utility Model Publication No. Sho 62-24179. In the air conditioner described in this publication, a heat exchanger and a blower are arranged in a ventilation path in a main body that connects an inlet and an outlet.

[0003]

In the above-described air conditioner, indoor air is easily entrained in the vicinity of the short outlet of the substantially rectangular outlet. This example is shown in FIG.
And FIG. In these figures, reference numeral 50 denotes an indoor unit of the separation type air conditioner, 51 denotes a blower fan, 52 denotes a heat exchanger, 53 denotes an outlet, 54 denotes a vertical blade, and 55 denotes a ventilation path. Reference numeral 56 in FIG. 10 is a shielding plate that does not allow air to pass at all.
In such an air conditioner, particularly in the air conditioner shown in FIG. 9, the speed of the air E blown out from the side is almost the same as the speed of the air F blown out from the center of the outlet 53. Met. For this reason, the amount of the indoor air G entrained by the blown air is also large, and this indoor air is humid because it is air that has not been cooled and dehumidified by the heat exchanger. "Drain" was easily attached. Further, in the indoor unit 50A shown in FIG. 10, although the side part shields the air blown out by the alligator, the velocity of the air E passing through the ventilation path immediately adjacent to the shielding plate is equal to the velocity of the air F in the central part. Almost the same and fast,
There has been a disadvantage that the room air G is entrained in the air and the drain easily adheres to the vicinity H2 of the outlet. Outlet 5
If the drain easily adheres to 3, the drain collects to form a large-sized drain, and as a result, the drain may be dropped.

[0004] The present invention provides an air conditioner in which the adhesion of drain is suppressed.

[0005]

In order to solve the above-mentioned problems, a first aspect of the present invention is directed to a suction port provided in a main body, a horizontally elongated outlet, and a plurality of the outlets arranged in a horizontal direction of the outlet. An air conditioner having a number of vertical blades for changing the direction of wind to be discharged and having a heat exchanger and a blower arranged in a ventilation path connecting the suction port and the air outlet, wherein a short piece of the air outlet is provided. A resistance plate is disposed across the ventilation path between the inner wall of the side and the vertical blade closest to the inner wall, and the resistance plate is provided between the inner wall on the short side of the outlet and the vertical blade closest to the inner wall. Are provided with a number of small openings for reducing the amount of air discharged from the ventilation path.

According to a second aspect of the present invention, in the air conditioner according to the first aspect, the area of each of the plurality of openings provided in the resistance plate is 1.5 square millimeters and the total number of the plurality of openings with respect to the resistance plate. The area ratio is about 55%.

[0007]

[0008]

[0009]

In the air conditioner according to the first and second aspects of the present invention, the amount of air discharged from the ventilation path between the inner wall on the short side of the outlet and the vertical blade closest to the inner wall is reduced by the resistance plate. .

[0010]

[0011]

[0012]

[0013]

An embodiment of the present invention will be described with reference to the drawings. 1 to 8 show an embodiment of the present invention. In the drawings, reference numeral 1 denotes an indoor unit (main body) of a separation type air conditioner, which is installed on a ceiling surface or a floor in a room. The indoor unit is connected to an outdoor unit (not shown) disposed outdoors by a refrigerant pipe or a signal line to form an air conditioner. The indoor unit 1 is formed with a suction port 2 and an air outlet 3, and a ventilation path 20 connecting the air inlet and the air outlet is provided with a plate-fin type heat exchanger 4 and air from the axial direction. A centrifugal blower 5 that blows air in the suction circumferential direction is arranged. This blower 5
Are two blower fans 5A and one fan motor 5B
And a fan casing 5C. Numeral 6 is a vertical blade (wind direction changing plate) for changing the blown air in the left-right direction (short piece direction). A drain pan 7 mainly receives a drain of the heat exchanger 7A when the indoor unit 1 is hung on the ceiling.
And a portion 7B that mainly receives the drain when the indoor unit 1 is placed on the floor. An opening 7C is provided in the drain pan 7 and communicates with an opening of the casing 5C of the blower 5. In FIG. 3, reference numeral 21 denotes a horizontal blade, which is not shown in FIGS.

Reference numeral 8 denotes a resistance plate formed of punched metal, and this resistance plate has a round hole (through hole) 8A. The diameter of the hole 8A is 1.4 mm (the opening area is 1.54 square mm), the pitch is 1.8 mm, and the aperture ratio of the resistor plate is 55%. The resistance plate 8 is disposed over a ventilation path between the inner wall of the short piece 3B of the outlet 3 and the closest vertical blade 6A. Therefore, as shown in FIG. 2, the resistance plates are arranged at two locations on the left and right sides. The suction port 2
Are formed between the grilles of the suction grill 2A. 9 is a front panel of the indoor unit, 10 is a bottom panel, 11 is a rear panel, 12 is an upper panel, and 13 is a side panel. Therefore, when the indoor unit 1 is hung on the ceiling plate, the back plate 11 is located on the upper surface, the upper plate 12 is located on the front surface, the side plate 13 is similarly located on the side surface, and the front plate 9 Is located on the bottom surface, and the bottom plate 10 is located on the back surface.

Reference numeral 8B denotes a mounting flange of the resistance plate 8, which is formed to be bent at about 90 degrees with respect to the plate 8C having the holes. Reference numeral 8D denotes a screw hole provided in the flange, and the short piece is screwed to the wall of the ventilation passage.

Although a remote controller for controlling the operation of the indoor unit is provided, it is not shown.

In the air conditioner configured as described above, the air is sucked in from the suction port 2, heat-exchanged in the heat exchanger 4 (after being cooled in the cooling operation), and then discharged from the air outlet 3. The wind direction is adjusted by the blades 6 and 21 provided in the portion, and the air is blown out from the air outlet 3. At this time, the speed of the air A flowing near the inner ventilation passage 20 at the side of the outlet, ie, near the inner wall on the short piece 3B side, is suppressed by the resistance plate 8 to be lower than the speed of the air B flowing toward the center. Therefore, the air A
As a result, the amount of air H entrained can be kept small. This air H has a higher humidity than the air A and B (the heat exchanger 4 acting as a cooler during the cooling operation).
When the air H is entrained in a large amount, a large amount of drain adheres to the air outlet, but in the air conditioner of this embodiment, the air A
Is suppressed, the amount of air H is suppressed, so that the adhesion of drain can be suppressed. For this reason, adhesion of drain can be suppressed as much as possible.

For example, in the conventional apparatus shown in FIG. 9, when the apparatus is operated for 6 hours under the conditions of a room temperature of 26 ° C. and a humidity of 88%, drainage adheres to the blow-out portion at a glance and in a wide range. . The range to which the drain adheres when there is no resistance plate is shown as range X in FIG. In addition, when the air conditioner of the embodiment of the present application was operated under the same conditions, it was confirmed that drain was slightly attached to the range Y, and the area where the drain was attached was suppressed to about 1/5 to 1/6. Was done. Therefore, according to the present invention, dripping of the drain can be suppressed as much as possible by suppressing the adhesion of the drain near the outlet.

In this embodiment, the diameter of the through holes is 1.4 mm, the pitch is 1.8 mm, and the aperture ratio is 5 mm.
Although an example using a 5% resistance plate was shown, as a comparative experiment, an experiment was performed using two resistance plates having three different through holes, pitches, and aperture ratios. The first resistor plate has a through hole having a diameter of 1.2 mm (opening area is 1.13 square mm), a pitch of 1.5 mm, and an aperture ratio of 58%. Has a through hole having a regular hexagonal shape, an interval between opposing sides of 2.2 mm (opening area is 4.19 square millimeters), a pitch of 2.8 mm, and an aperture ratio of 61.7. % Was used. As described above, the resistance plate of the example has a through hole having a diameter of 1.4 mm (opening area is 1.54 square mm), a pitch of 1.8 mm, and an aperture ratio of 55%. In the first resistance plate, although the aperture ratio was larger than that of the example, the diameter of the hole (opening area) was small, so that the ventilation resistance was too high and the air was hard to flow, so that the result could not be used. In the second resistor plate,
The aperture ratio was too large and air flowed too much, and the effect of reducing the amount of drain adhering due to the large amount of room air being caught in the room was small, and this resist plate could not be used. This 2
Considering the two resistance plates and the resistance plate in the embodiment, it is considered that the air passing through the resistance plate depends on the opening area of the through hole and the opening ratio. Considering the experiments of these three resistance plates, the opening area is about 1.5 square millimeters, for example, from 1.3 square millimeters to 1.7 square millimeters.
A square millimeter is considered good. It is considered that the aperture ratio should be about 55%, for example, about 53% to 57%. If the two conditions of the opening area and the opening ratio of the through hole are not simultaneously in the above range,
It seems to be ineffective.

[0020]

In the air conditioner according to the first and second aspects of the present invention, the amount of air discharged from the ventilation path between the inner wall on the short side of the outlet and the vertical blade closest to the inner wall by the resistance plate is reduced by the resistance plate. Because it can be suppressed, the adhesion of the drain near the outlet can be suppressed, and the dripping of the drain can be suppressed.

[0021] In the air conditioner according to the second aspect of the present invention, in the air conditioner according to the first aspect, the area of each of the plurality of openings provided in the resistance plate is 1.5 square millimeters,
And the ratio of the total area of the large number of openings to the resistance plate is about 5
Since it is set to 5%, the amount and resistance of the air passing through the resistance plate are optimally adjusted, so that the adhesion of the drain near the outlet can be suppressed and the dripping of the drain can be suppressed.

[0022]

[0023]

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a side surface of an air conditioner of the present invention.

FIG. 2 is an explanatory diagram showing the front of the air conditioner.

FIG. 3 is a perspective view showing the vicinity of an air outlet of the air conditioner.

FIG. 4 is a rear view showing a resistance plate of the air conditioner.

FIG. 5 is a front view showing a resistance plate of the air conditioner.

FIG. 6 is a side view of a resistance plate of the air conditioner.

FIG. 7 is a sectional view of the air conditioner taken along line VII-VII shown in FIG. 5;

FIG. 8 is a VIII circle enlarged explanatory view of the air conditioner shown in FIG. 5;

FIG. 9 is an explanatory diagram showing the front of a conventional air conditioner.

FIG. 10 is an explanatory view showing the front of a different conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit (body) 2 Inlet 3 Outlet 3A Long piece 3B Short piece 4 Heat exchanger 8 Resistance plate 8A Through hole

──────────────────────────────────────────────────続 き Continuing on the front page (72) Koji Mori, Inventor 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Takeshi Wakayama 2-5-1 Keihanhondori, Moriguchi-shi, Osaka No. 5 Inside Sanyo Electric Co., Ltd. (56) References Hira 6-2046 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 1/00 361 F24F 13/06

Claims (2)

(57) [Claims] 1. An inlet provided in a main body , a horizontally long outlet,
Discharged from this outlet arranged in the horizontal direction of this outlet
Has many vertical blades to change the direction of the wind
A heat exchanger and a ventilation passage connecting the suction port and the air outlet.
In the air conditioner in which the blower and the blower are arranged,
Ventilation between the inner wall on one short side and the nearest vertical blade
A resistance plate is placed over the road, and the resistance plate
Between the inner wall on one short side of the exit and the nearest vertical blade
Many to reduce the amount of air discharged from the ventilation path of
An air conditioner characterized by having a small opening . 2. The air conditioner according to claim 1, wherein
The area of each of the multiple openings provided in the plate is 1.5
Square millimeters and multiple openings for the resistor plate
The ratio of the total area of the air conditioner is about 55% .