JP2898361B2 - Indoor unit of air conditioner - Google Patents

Description

The present invention relates to an indoor unit of an air conditioner, and more particularly to an indoor unit of an air conditioner in which the vicinity of an air outlet is improved.

(Prior Art) As shown in FIG. 8, an indoor unit of a conventional air conditioner is installed on a wall surface of a room, and an indoor heat exchanger b for performing heat exchange of indoor air in a casing a, and a heat exchanger b. A cross flow fan c that blows the subsequent air is provided.

A suction port d for sucking room air and a blow port e for blowing air after heat exchange are formed on the front surface of the casing a, and the room air sucked from the suction port d is heat-exchanged by the heat exchanger b. Thereafter, the air is blown into the room from the air outlet e by the cross flow fan c.

An outlet passage g is defined in the cross flow fan c and the outlet e by a nose f and a casing a, and efficiently guides the air after heat exchange to the outlet e.

As shown in FIGS. 9 and 10, the outlet passage g is formed in a trumpet shape in the left, right, up and down directions toward the outlet e so as to blow out the blown air at a wide angle.

(Problems to be Solved by the Invention) Incidentally, the surface of the outlet passage g is formed in a curved shape so as to spread in the direction of the outlet e, and the surface is formed smoothly. For this reason, as shown in FIGS. 9 and 10, air was easily separated from the surface of the outlet passage g, and a vortex of air was generated around the outlet e.
Then, the wide-angle blowing effect is reduced due to the generation of the eddy current of air, and there is a problem that dew condensation occurs around the outlet e where the eddy current is generated during the cooling operation.

Accordingly, the present invention has been devised in view of the above-described problems, and provides an indoor unit of an air conditioner aiming at achieving wide-angle blowing and preventing dew condensation around an outlet e generated during cooling operation. Is what you do.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides a passage surface defining a blowout passage for blowing air after heat exchange to the indoor side in a blowout direction. It is formed in a curved shape so as to spread out, and a number of depressions are formed in a dimple shape on the surface of the passage.

(Operation) Since the present invention is configured as described above, it flows along the blow-out passage after heat exchange, so that separation of air around the blow-out port can be prevented.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a cutaway perspective view of an indoor unit 1 of an air conditioner according to the present invention.

This indoor unit 1 is installed on an indoor wall or the like,
Heat exchanges indoor air to perform indoor air conditioning.
In the casing 2, an indoor heat exchanger 3 for exchanging indoor air with heat and a cross flow fan 4 for blowing heat exchanged air are mainly accommodated.

A suction port 5 for sucking indoor air is formed on the front surface of the casing 2, and a blow port 6 for blowing the air after heat exchange forward is formed below the suction port 5.

As shown in FIG. 6, the heat-exchanged air blown from the cross flow fan 4 is supplied from the cross flow fan 4 to the blow outlet 6.
Nose 8 that blows out air 7 that guides the air flow
And the casing 2.

As shown in FIGS. 5 and 6, the outlet passage 7 has a curved surface which is entirely raised toward the outlet 6 so as to blow out the blown air at a wide angle.
It is configured by forming a trumpet shape in the left, right, up and down directions. As shown in FIGS. 2 to 4, a plurality of depressions 9 each having a spherical concave surface are formed on the surface of the blowing passage 7 by molding or the like.

 Next, the operation of the present invention will be described.

As shown in FIG. 1, the indoor air is sucked into the casing 2 from the air inlet 5 and heat-exchanged by passing through the indoor heat exchanger 3, and then passes through the outlet passage 7 by the cross flow fan 4. The air is blown into the room again from the air outlet 6.

The main flow of the blown air is adjusted by a louver (not shown) provided in the blowout port 6, but near the blowout port 6, the plurality of recesses 9 formed in the surface of the blowout passage 7 allow the airflow to be controlled. Since peeling is prevented, the fifth
As shown in FIG. 6 and FIG. 6, the air flows along the surface of the outlet passage 7.

The depression 9 formed on the surface of the outlet passage 7 is expected to have the same effect as the dimple formed on the surface of the golf ball in order to extend the flight distance, for example. That is, by forming dimples on the surface of the curved outlet passage, separation of the airflow from the curved surface is prevented,
It has the function of preventing Karman vortex generated at the rear of the curved surface. Therefore, as shown in FIG. 5 and FIG. 6, the separation of the air flow does not occur near the outlet 6 as in the related art.
The air is blown out at a wide angle along the curvature of the blow-out passage 7. Further, during the cooling operation, dew condensation near the outlet 6 due to the swirling air flow can be prevented.

In the above-described embodiment, the recess 9 is formed in the blowing passage 7 by molding or the like. However, as shown in FIG. 7 can achieve the same effect as the depression 9.

Further, in the above embodiment, the depression 9 is formed in the outlet passage 7.
Although it is formed in substantially the entire area along the surface of the above, it is a matter of course that the depression 9 may be formed only in the raised curved surface portion near the outlet 6. In particular, since the separation of the air flow is remarkable in the vicinity of the air outlet 6, the separation of the air flow can be prevented, so that the occurrence of dew condensation in the vicinity of the air outlet 6 can be prevented.

[Effects of the Invention] As described above, according to the present invention, since the air flow does not occur on the surface of the air outlet passage and is blown out at a wide angle, the air blowing efficiency is improved and the air flow during the cooling operation is improved. Dew can be prevented beforehand.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view showing a hollow formed in an outlet passage of the indoor unit, FIG. 4 is a sectional view of FIG. 2, FIG. 5 is a front view showing the flow of air near the air outlet of the indoor unit, FIG. 6 is a sectional view of FIG. 5, and FIG. 7 shows another embodiment. FIG. 8 is a sectional view of a conventional indoor unit, FIG. 9 is a front view showing the flow of air near the air outlet of the conventional indoor unit, and FIG.
It is sectional drawing of a figure. In the figure, 1 is an indoor unit of the air conditioner, 7 is an air outlet passage, and 9 is a hollow.

Claims (1)

(57) [Claims] 1. A passage surface defining a blow passage for blowing air after heat exchange into a room is formed in a curved shape so as to spread in the direction of an outlet, and a plurality of dimples are formed in the passage surface. An indoor unit for an air conditioner, wherein the indoor unit is formed in a shape.