JPH0455634A - Indoor device of air conditioner - Google Patents

Abstract

PURPOSE:To improve a blowing efficiency of air and prevent a dew formation when a cooling operation is carried out by a method wherein a passage surface defining a blowing passage to blow air after heat exchanging operation into an indoor side into several segments is formed with several recesses. CONSTITUTION:Indoor air is sucked from a suction port 5 into a casing 2. The air is heat exchanged by an indoor heat exchanger 3, passes through a blowing passage 7 by a cross flow fan 4 and then the air is blown again into the indoor area through a diffuser 6. A major flow of the blown air is adjusted by a louver disposed at the diffuser 6. In this case, a peeling of air flow is prevented by several recesses 9 formed at the surface of the air blowing passage 7 near the diffuser 6, resulting in that the air is flowed along the surface of the blowing passage 7. That is, there is no peeling of the air flow near the diffuser 6 and the air is blown at a wide angle along a curvature of the air blowing passage 7. In addition, it is possible to prevent a dew formation near the diffuser 6 under eddy current of air during a cooling operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to an indoor unit for an air conditioner, and particularly relates to an indoor unit for an air conditioner in which the vicinity of the air outlet is improved.

(Prior art) As shown in Fig. 8, the indoor unit of a conventional air conditioner is installed on the wall of the room, and has an indoor heat exchanger inside the gauging a that exchanges heat with the indoor air. A galvanometric fan C is provided to blow the rear air.

The front side of this gauging a is formed with an inlet d that sucks indoor air and an outlet e that blows out the air after heat exchange. After that, the air is blown into the room from the air outlet e by the flow fan C.

In addition, a blowout passage g is defined between the galvanic fan C and the blower outlet e by the nose f and the casing a, and the air after heat exchange is efficiently guided to the blower outlet e.

As shown in FIGS. 9 and 10, this blow-off passage g is formed in a trumpet shape in the horizontal and vertical directions toward the blow-off port e so as to blow out the blow-out air over a wide angle.

(Problems to be Solved by the Invention) By the way, the surface of this blowing hole Fi@g has a curvature and is formed to be smooth. For this reason, as shown in FIGS. 9 and 10, air was easily separated from the surface of the blow-off passage g, and a vortex of air was generated around the blow-off port 0.

The generation of this air vortex deteriorates the wide-angle blowout effect, and there is also the disadvantage that dew condensation occurs around the air outlet 0 where the vortex occurs during cooling operation.

Therefore, the present invention has been devised in view of the above-mentioned problems, and provides an indoor unit for an air conditioner that aims to achieve wide-angle airflow and prevent condensation around air outlet 0 that occurs during cooling operation. It is something to do.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides a structure in which a large number of depressions are formed on the surface of the passageway that partitions and forms the blowout passageway for blowing out the air after heat exchange to the indoor side. formed and composed.

(Function) Since the present invention has the above-described configuration, the air flows along the blow-off passage after heat exchange, so that separation of air around the blow-off port can be prevented.

(Example) Hereinafter, an example 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, etc., and performs indoor air conditioning by exchanging heat with indoor air. A galvanometric fan 4 that blows the air is mainly housed therein.

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

From the galvanic fan 4 to the outlet 6, as shown in FIG. 6, there is a blowing passage 7 that guides the heat-exchanged air blown from the galvanic fan 4 to the outlet 6, or a nose 8 that partitions the air flow. It is partitioned by gauging 2.

As shown in FIG. 5 and FIG.
It has a curved surface that bulges toward the sides as a whole, and is formed in a trumpet shape in the left and right downward direction of the air outlet 6. Further, as shown in FIGS. 2 to 4, a plurality of depressions 9 each having a spherical surface are formed on the surface of the blowing passage 7 by molding or the like.

Next, the present invention will be explained in detail.

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

The main flow of this air is regulated by a louver (not shown) provided at the outlet 6, but near the outlet 6, the air flow is controlled by a plurality of depressions 9 formed on the surface of the outlet passage 7. Since separation is prevented, the air flows along the surface of the blowing passage 7 as shown in FIGS. 5 and 6.

The depressions 9 formed on the surface of the second blowing passage 7 are expected to have the same effect as the dimples formed on the surface of a golf ball, for example, to increase flight distance. That is, by forming dimples on a surface having curvature, the air flow is prevented from separating from the curved surface, and the Karman vortex flow generated at the rear of the curved surface is prevented. Therefore, as shown in FIGS. 5 and 6, air can be blown out at a wide angle along the curvature of the blowout passage 7 without causing separation of the airflow near the blowout port 6 as in the conventional case. Become. Furthermore, during cooling operation, it is possible to prevent dew condensation near the Suita Ro 6 due to the swirling of air.

In the above-described embodiment, the blowout passage 7 was formed with the recess 9 by molding or the like, but as shown in FIG.
1 can be applied to the blowout passage 7 to achieve the same effect as the depression 9.

Further, in the above embodiment, the depressions 9 may be formed almost over the entire surface of the outlet passage 7, or the depressions 9 may be formed only on the raised curved surface near the outlet 6. It is. Particularly, since separation of the airflow occurs near the outlet 6, by preventing this separation of the airflow, it is possible to prevent condensation from occurring near the outlet 6.

[Effects of the Invention] As described above, according to the present invention, air blowing efficiency is improved and dew formation during cooling operation can be prevented.

[Brief explanation of the drawing]

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 recess formed in a blowing passage of the indoor unit, and FIG. FIG. 4 is a sectional view of FIG. 2, FIG. 5 is a front view showing the air flow near the air outlet of the indoor unit, FIG. 6 is a sectional view of FIG. 5, and FIG. 7 shows another embodiment. 8 is a sectional view of a conventional indoor unit, FIG. 9 is a front view showing the flow of air near the outlet of the conventional indoor unit, and FIG. 10 is a sectional view of FIG. 9. In the figure, 1 is an indoor unit of an air conditioner, 7 is an air outlet passage, and 9 is a recess. Patent applicant Higashi Co., Ltd.

Claims (1)

[Claims] 1. An indoor unit of an air conditioner, characterized in that a number of depressions are formed on the surface of the passage defining a blowing passage for blowing out the air after heat exchange to the indoor side.