JP2002071161A - Indoor machine for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor machine for an air conditioner to eliminate a need to use a heat insulation material, etc., and enable suppression of the generation of contact noise of a horizontal louver. SOLUTION: The horizontal louver 20 for regulating a wind direction situated in an air outlet 19 opened to the undersurface side of an indoor machine body 11 is brought into contact with a drain pan 22 during full closing, and cushioning parts 24 and 25 having spring properties are integrally formed at the tip edge of the drain pan 22 with which the horizontal louver 20 makes contact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner, and more particularly to a mechanism for suppressing a contact noise of a horizontal louver.

[0002]

2. Description of the Related Art Generally, in an indoor unit of an air conditioner, a horizontal louver capable of swinging about a horizontal axis is provided at an outlet for blowing conditioned air heated or cooled by the indoor unit into the room. The direction of the blown wind is adjusted.

That is, FIG. 3 is a view showing the outer shape of the indoor unit of the air conditioner. A front suction port 2 in which a grill is fitted is provided on the front side of the indoor unit body 1, and the upper surface is also provided on the upper surface. An upper suction port (not shown) is provided. An air outlet 3 for conditioned air is formed on the lower surface side of the indoor unit main body 1, and a horizontal louver 4 for adjusting the vertical direction of the conditioned air is swung around the horizontal axis at the outlet 3. It is movably provided.

In such an air conditioner indoor unit, when the operation is stopped, the horizontal louver 4 is fully closed so that its aesthetic appearance is not impaired.

[0005]

However, when the horizontal louver 4 is fully closed, the horizontal louver 4 is configured to come into contact with the front edge of a drain pan provided in the indoor unit main body 1. . That is, the horizontal louver 4 is swung by a motor (not shown), but when the horizontal louver 4 is closed, the motor is slightly slightly rotated in the closing direction so that the horizontal louver 4 is at a predetermined closed position. You. Here, a stepping motor is generally used as a motor for driving the louver. In a stepping motor, a predetermined pulse is repeatedly applied to and stopped at a rotation angle, and the stepper motor is finely rotated. However, depending on a stop position (rotation angle) at that time, the direction in which the power is stopped does not stop at that position but slightly returns. Has the characteristic of turning. For this reason, depending on the rotation angle of the motor when the horizontal louver 4 abuts on the front end edge of the drain pan portion, it returns slightly to the opening direction when power is stopped, and is rotated in the closing direction.
This is repeated several times. Therefore, horizontal louver 4
During the closing operation, the opening and closing operation is repeated several times near the fully closed position. Therefore, when the horizontal louver 4 is fully closed, the horizontal louver 4 repeatedly collides with the drain pan several times, and there is a problem that a contact sound is generated each time. Therefore, conventionally, a buffer member such as a heat insulating material is attached to a contact portion of the drain pan portion with the horizontal louver 4 to suppress the occurrence of the contact noise.

[0006] However, in the case where the heat insulating material is attached as described above, there is a problem that the cost of the attachment of the heat insulating material increases. Therefore, it has been proposed to provide a thin rib at the front end of the drain pan to reduce the contact area with the horizontal louver 4. However, this also causes a problem that the generation of the contact sound cannot be sufficiently suppressed. is there.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide an indoor unit of an air conditioner which does not require the use of a heat insulating material or the like and can suppress the contact noise of a horizontal louver. I do.

[0008]

The invention according to claim 1 is
A horizontal louver for adjusting the wind direction, which is provided at an air outlet opened on the lower surface side of the indoor unit main body, is formed integrally with a shock-absorbing portion having a spring property at a distal end edge of a drain pan portion which abuts when fully closed. Features.

According to a second aspect of the present invention, in the first aspect of the present invention, the buffer portion is a small protruding piece formed by cutting and raising the tip end of the drain pan. The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the buffer portions are formed in at least two places on the left and right.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a longitudinal sectional view of an indoor unit 10 of an air conditioner according to the present invention. A front panel 12 is provided on a front portion of an indoor unit main body 11.
On the front side of the front is a front suction opening 1 into which a grill 13a is fitted.
4a is opened, and an upper suction opening 14b in which a grill 13b is fitted is opened on the upper surface. A first indoor heat exchanger 15a which is curved so as to protrude forward is provided on the front side of the indoor unit main body 1, and is connected to the first indoor heat exchanger 15a on the upper side. A second indoor heat exchanger 15b is provided which is inclined downward toward the rear side. A two-way valve 16 with a throttle is provided between the first indoor heat exchanger 15a and the second indoor heat exchanger 15b. Further, the second indoor heat exchanger 15b
A third indoor heat exchanger 17 which acts as a condenser during the dehumidifying operation is provided substantially parallel to the second indoor heat exchanger 15b.

On the other hand, an indoor fan 18 is provided behind the first indoor heat exchanger 15a, and a conditioned air outlet 19 is formed below the indoor fan 18. A horizontal louver 20 for adjusting the upper and lower blowing directions of the conditioned air is provided at the outlet 19 so as to be swingable about a horizontal shaft 21 by a motor (not shown).

The indoor air sucked by the indoor fan 18 from the front suction port 14a and the upper suction port 14b is subjected to heat exchange in the indoor heat exchangers 15a, 15b, 17 and then from the outlet 19 to the horizontal louver. Guided at 20, it is blown into the room as conditioned air.

When the horizontal louver 20 is fully closed as shown by the solid line, the tip of the horizontal louver 20 is disposed below the first indoor heat exchanger 15a.
Abuts on the front edge of the front end. Therefore, when the horizontal louver 20 is fully closed, the horizontal louver 20 may hit the front end of the drain pan 22 to generate a contact sound. Therefore, in the present invention, the drain pan 2
Buffer portions are provided at both end portions of the front edge portion of No. 2.

FIG. 2 is a perspective view showing the structure of the cushioning portion. The front end of the drain pan 22 is provided with cuts 23, 23 near both ends so that the width of the drain pan 22 is small and the spring performance in the vertical direction is reduced. A small protruding piece 24 is formed, and a protruding part 25 projecting slightly forward from the front edge of the drain pan 22 is integrally formed at the tip of the small protruding piece 24.

When the horizontal louver 20 is swung in the direction indicated by the arrow by the stepping motor 26 in response to the stoppage of the operation of the air conditioner and approaches the fully closed state, the front edge of the horizontal louver 20 is firstly moved to the front edge of the drain pan 22. A horizontal louver 2 when it hits a protrusion 25 formed on the
0 may return to the opening direction, and the operation of hitting the protrusion again may be repeated. However, even in such a case, the impact force of the horizontal louver 20 on the drain pan 22 is buffered by the spring property of the small protruding piece 24, and the contact noise caused by the horizontal louver 20 abutting on the front end of the drain pan 22. Is suppressed.

Further, when the buffer portions are provided at both ends of the front edge portion of the drain pan 22 as described above, even if the horizontal louver 20 has a variation in warpage, the horizontal louver 20 is provided on one of the right and left buffer portions. , It is possible to reliably suppress the generation of the contact sound.

In the above embodiment, the projection 25 is provided at the tip of the small protruding piece 24. However, the small protruding piece 24 is formed so as to first come into contact with the horizontal louver 20. Accordingly, the projection 25 can be omitted.

[0019]

As described above, according to the present invention, a horizontal louver for adjusting the wind direction is provided at an air outlet opened on the lower surface side of the indoor unit main body, and the drain pan contacts with the horizontal louver when the horizontal louver is fully closed. Since the shock-absorbing portion having the spring property is integrally formed at the tip edge of the portion, it is possible to reliably suppress the generation of contact noise when the horizontal louver is fully closed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a schematic configuration of an indoor unit of an air conditioner according to the present invention.

FIG. 2 is an enlarged perspective view of a buffer section according to the present invention.

FIG. 3 is a perspective view of an indoor unit of a general air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 indoor unit main body 2 front suction port 3 rear suction port 10 indoor unit 11 indoor unit main body 12 front panel 14a front suction port 14b upper suction port 18 indoor fan 19 blowout port 20 horizontal louver 22 drain pan 23 cutout 24 small protrusion 25 protrusion

Claims (3)

[Claims] 1. A buffering portion having a spring property is integrally formed at a distal end portion of a drain pan portion, which is in contact with a horizontal louver for wind direction adjustment provided at an air outlet opening on a lower surface side of an indoor unit main body when the horizontal louver is fully closed. An indoor unit of an air conditioner, wherein the indoor unit is formed. 2. The indoor unit of an air conditioner according to claim 1, wherein the buffer section is a small protruding piece formed by cutting and raising the front end edge of the drain pan section. 3. The indoor unit of an air conditioner according to claim 1, wherein the buffer section is formed at least at two places on the left and right.