JP2004271114A - Indoor unit for air-conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for an air-conditioner, reducing intermittent abnormal sounds (surging) when generated at others than the end by increasing draft resistance with dust accumulated on a filter or dew drops significantly deposited on the fins of a heat exchanger. <P>SOLUTION: A stabilizer has a plate protrusion on an air outlet portion in parallel to the longitudinal direction of the stabilizer. Thereby, the degradation of blowing performance is suppressed and static pressure is increased to reduce surging. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
[Industrial applications]
The present invention relates to an air conditioner used for air conditioning of a house or the like, and particularly to an air circuit.
[0002]
[Prior art]
As shown in FIG. 7, in a conventional air conditioner, a cross flow fan 5 configured by connecting a plurality of blades 9a and a series of end plates 9b supporting the blades 9a in a plurality of axial directions is provided. It is arranged between the stabilizer 7 and the rear guider 10 that constitute the casing, and the stabilizer 7 and the rear guider 10 form an air outlet, thereby forming a blower circuit. At least one end of the rear guider 10 is provided with a block 11 between the vicinity of the cross flow fan 5 and the outlet to improve the blowing speed at the end of the cross flow fan 5 and generate an unstable airflow. And reverse suction are prevented, and turbulence of the air flow is suppressed even when the direction of the blowing air is deflected. In addition, it is possible to reduce intermittent abnormal noise (surging) that occurs when ventilation resistance increases due to accumulation of dust on the filter (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-5-87087
[Problems to be solved by the invention]
However, as described above, in the conventional configuration, the effect of the block 11 can reduce the surging that occurs near the end, but on the other hand, surging does not occur only from the end. Varies from an end to a central portion or a central portion. In the case of surging from a part other than the end, the block 11 has a very large ventilation resistance, which leads to deterioration of air volume performance, and thus cannot be said to be an effective measure as a whole.
[0005]
An object of the present invention is to solve the above-mentioned conventional problems, and to provide an air conditioner capable of suppressing a decrease in ventilation performance and suppressing surging from an end portion to a center portion or even in a center portion. .
[0006]
[Means for Solving the Problems]
In order to achieve this object, an air conditioner of the present invention includes a cross flow fan, a stabilizer, a rear guider, and a heat exchanger in a main body, and is substantially parallel to a longitudinal direction of the stabilizer on an outlet side of the stabilizer. And a plate-like projection is provided on the upper surface. Further, the thickness of the plate-like projection is gradually increased from the upstream to the downstream of the blowout portion. Further, the thickness of the plate-like projection provided near the end of the blowout portion is maximum near the end portion, and gradually becomes thinner toward the center of the blowout portion. Further, the thickness of the plate-shaped projection is uniform at the center portion, and the end portion of the projection is gradually thinned.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0008]
(Embodiment 1)
In the embodiment of the present invention, the same components as those of the above-described conventional example are denoted by the same reference numerals, and description thereof will be omitted.
[0009]
As shown in FIG. 1, a main body 1 of the air conditioner includes a frame 2 and a front cover 3 attached to the front of the frame 2, and a suction grill is provided above the frame 2 and the front cover 3. 4 are provided. Further, as shown in FIG. 2, heat exchangers 6a, 6b, 6c are provided so as to surround the entire area as viewed from the center of the cross flow fan 5.
[0010]
FIG. 3 is a perspective view of the stabilizer according to the first embodiment of the present invention. The stabilizer 7a has a plate-like projection 8a substantially in parallel with the longitudinal direction in a portion where surging occurs.
[0011]
With this shape, in the stabilizer 7a, the static pressure is increased in the portion having the projection 8a, and the effect of reducing surging caused by the increase in ventilation resistance is obtained.
[0012]
(Embodiment 2)
In the second embodiment of the present invention, as shown in FIG. 4, in the stabilizer 7a, the thickness of the projection 8b is increased continuously or intermittently from upstream to downstream of the blowout portion.
[0013]
By changing the thickness, the ventilation resistance increases as compared with the case where the plate thickness does not change, but on the other hand, the static pressure can be increased, and the reduction of surging caused by the increase in ventilation resistance can be reduced. The effect can be obtained. Further, by increasing the thickness continuously, it is possible to suppress an increase in noise without increasing the fluctuation component.
[0014]
(Embodiment 3)
In the third embodiment of the present invention, as shown in FIG. 5, in the stabilizer 7a, particularly when the projection 8c is provided at the end, the thickness is continuously or intermittently reduced from the end to the center. It was done.
[0015]
When the surging occurs from the end to the center due to the influence of the end due to the shape with this thickness changed, according to the feature that the influence of the end decreases according to the distance from the end, The surging generated due to the increase of the ventilation resistance due to the decrease of the air blowing performance can be reduced.
[0016]
(Embodiment 4)
In the fourth embodiment of the present invention, as shown in FIG. 6, the stabilizer 7a has a uniform thickness at the center of the projection 8d, and the thickness is reduced continuously or intermittently at the end of the projection 8d. Things.
[0017]
By changing the thickness, the flow of the wind around the projection 8d can be made smoother, and the rise of noise can be reduced.
[0018]
In the above-described embodiment, the indoor unit of the separation type air conditioner has been described. Further, the projection may be formed of resin integrally with the stabilizer, or may be separately mounted.
[0019]
【The invention's effect】
As is clear from the above description, according to the present invention, it is possible to suppress a rise in noise by reducing surging while reducing a decrease in ventilation performance.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an indoor unit of an air conditioner according to Embodiment 1 of the present invention. FIG. 2 is a schematic cross-sectional view of an indoor unit of the air conditioner. FIG. 3 is a perspective view of a stabilizer of the air conditioner. FIG. 4 is a perspective view of a stabilizer of the air conditioner according to the second embodiment of the present invention; FIG. 5 is a perspective view of a stabilizer of the air conditioner of the third embodiment of the present invention; FIG. 6 is a fourth embodiment of the present invention; FIG. 7 is a perspective view of a stabilizer of an air conditioner of the present invention.
5 Cross flow fan 7, 7a Stabilizer 8a, 8b, 8c, 8d Projection 10 Rear guide

Claims (4)

In the air conditioner provided with a cross flow fan, a stabilizer, a rear guider, and a heat exchanger in the main body, a plate-shaped projection is provided on the side of the blowout portion of the stabilizer substantially parallel to a longitudinal direction of the stabilizer. An air conditioner characterized by the following. 2. The air conditioner according to claim 1, wherein the thickness of the plate-like projection gradually increases from upstream to downstream of the blowout portion. 2. The air conditioner according to claim 1, wherein the thickness of the plate-like projection provided in the vicinity of the end of the blowout portion is maximum near the end portion, and gradually decreases toward the center of the blowout portion. . The air conditioner according to any one of claims 1 to 3, wherein the thickness of the plate-shaped protrusion is uniform at a central portion, and the end of the protrusion is gradually thinned.

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