JP2931516B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for mounting a drain hose on one of a plurality of drainage connecting pipes connected to a drain pan.
The present invention relates to an air conditioner in which a blind plug is attached to the remaining drain connection pipe.

[0002]

2. Description of the Related Art As a prior art of an air conditioner, there is one disclosed in Japanese Patent Application Laid-Open No. Hei 5-18554.

In this air conditioner, drain connection pipes are provided on the left and right sides of a drain pan, and both drain connection pipes can be provided with drain hoses and blind plugs. One of the drain connection pipes is provided depending on the position of a through hole formed in an indoor wall. A drain hose is attached to the drainage connection pipe of No. 1, and a blind plug is attached to the other end.

In this air conditioner, a projection is provided on a part of the outer circumference of the drain connection pipe, and the drain connection pipe is hooked and attached to the projection by a hook provided on the drain hose. The mounting configuration was almost the same.

[0005] Conventionally, as shown in FIG.
The screwdriver 4 is screwed into an opening 3a of a drain connection pipe 3 for connecting a blind plug 1 of a rubber member provided with a collar 1c to a drain pan 2 while forming a recess 1b for inserting a screwdriver 4 at the other end. It was attached using.

[0006]

However, in the device described in Japanese Patent Laid-Open No. 18554/1993, a hook provided on a blind plug is hooked on a projection provided on a part of the outer periphery of the drainage connection pipe. The blind plug could not be attached to the drainage connection pipe without considerable twisting. Similarly, when removing the blind plug from the drain connection pipe, the blind plug could not be removed without applying considerable force.

In the attachment of the blind plug 1 to the drain connection pipe 3 described with reference to FIG. 7, if the inner diameter of the opening 3a is A and the thickness of the blind plug 1 is t, the relationship of A-2t <6 (mm) is satisfied. And the inner diameter of the concave portion was 6 mm or less. For this reason, the general screwdriver 4 cannot be used, and the screwdriver 4 is inserted into the concave portion 1b of the blind plug 1 as shown in FIG. It was attached by the thing.

In this case, since the tip of the screwdriver 4 is thin, the one end 1a of the blind plug 1 penetrates and damages the tip of the screwdriver 4, or if the inner diameter of the concave portion 1b is close to 6 mm or less, the insertion is attempted. As shown in FIG. 8, there is a problem that the blind plug 1 comes out together with the screwdriver 4.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air conditioner having a simple structure and a blind plug which can be attached to a drain connection pipe by a simple operation.

[0010]

According to the present invention, a drain pan for receiving drain water from a heat exchanger is provided with a plurality of drain connection pipes, and a drain hose is attached to at least one of the drain connection pipes. In an air conditioner in which a blind plug is attached to the remaining drain connection pipe, a recess having a thickness t is formed by loosely inserting the screwdriver into the blind plug in order to attach a blind plug made of an elastic material to the drain connection pipe by screwing. On the other hand, a hole having an inner diameter A to which a blind plug is attached is formed in the drainage connection pipe, and A-2
The relationship of t> 6 mm is established.

[0011]

According to the above construction, since the inner diameter of the concave portion formed in the blind plug is 6 mm or more, the screw driver of 6 mm can be loosely inserted in the concave portion. The blind plug is inserted and attached to the drainage connection tube by loosely inserting it into the recess and pressing to attach to the drainage connection tube. Next, when the screwdriver is pulled, only the screwdriver loosely inserted into the recess of the blind plug is pulled out. Therefore, it is possible to avoid using a thin screwdriver to penetrate the distal end of the blind plug to cause breakage, and to prevent the blind plug from coming off when the screwdriver is pulled out.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 6 show an embodiment of the present invention. Reference numeral 5 denotes an air conditioner installed indoors, 6 denotes an air inlet, 7 denotes an air outlet, and 8 denotes an air outlet 7. The horizontal blades 9 are disposed in the middle of the ventilation path from the air inlet 6 to the air outlet 7, and the heat exchanger 10 is disposed below the heat exchanger 9 to receive the drain from the heat exchanger 9. Drain pans 11 and 12 are drain connection pipes provided to protrude outward from the drain pan 10, and 13 is a cross flow fan for sucking room air from the air inlet 6 and blowing it out from the air outlet 7. .

The drain connection pipe 11 is provided so as to protrude from the drain pan 10 to the back side, and a drain hose 14 is connected to the drain connection pipe 11 as shown in FIG.

On the other hand, the drain connection pipe 12 is also provided so as to protrude from the drain pan 10 to the back side similarly to the drain connection pipe 11, and a blind plug 15 described later is attached to the drain connection pipe 12.

As shown in FIG. 4, the blind plug 15 is a rod-shaped rubber body corresponding to the drain port 12a of the drainage connection pipe 12, and has an annular projection 15a along its outer periphery and a collar at the rear end. 15b to form a long hole-shaped recess 15c having an opening at the rear.

Further, the blind plug 15 is configured to satisfy the following relational expression (1).

[0018]

## EQU1 ## A-2t> 6 (mm) (1)

Here, A: the inner diameter of the drain port 12a t: the thickness of the recess 15c of the blind plug 15 and the outer circumference

In addition, B shown in FIG.
Is the inner diameter of the recess 15c.

With the above configuration, first, as shown in FIG.
The screwdriver 16 is inserted into the recess 15 c of the blind plug 15. In this case, the number 2 cross head screwdriver (JIS B463
3) That is, the screwdriver 16 is inserted into the concave portion 15c of the blind plug 15 using an outer diameter of 6 mm.

In this state, the screwdriver 16 is gradually pushed out in the direction of the arrow shown in FIG.
The stopper groove 15d formed in the collar 15b of the blind plug 15 is locked by the rear end of the blind plug 15, and the blind plug 15 is inserted into the drain port 12a of the drain connection pipe 12. Is done.

In this case, the drain port 12 of the drain connection pipe 12
Since the inner diameter A of the blind plug 15 is smaller than the outer diameter B of the blind plug 15 in the mounting state shown in FIG. Become. Therefore, as shown in FIG. 5, a gap E is formed between the recess 15 c of the blind plug 15 and the screwdriver 16 even when the screwdriver 16 is inserted. Even when pulled out, the blind plug 15 and the screwdriver 16 do not come out together, and only the screwdriver 16 is pulled out smoothly as shown in FIG.

If the screwdriver 16 has an outer diameter of 6 mm or more, the screwdriver 16 and the recess 15c of the blind plug 15 are used.
Even when the screw is in close contact, the projection 15a at the tip of the blind plug 15 is locked at the inlet side of the drain port 12a, so that the screwdriver 1
The blind plug 15 does not come out together with 6. Further, since the outer diameter of the screwdriver 16 is as large as 6 mm, when the blind plug 15 is inserted into the drain port 12a, the tip of the blind plug 15 may be penetrated with the tip of the screwdriver 16 and damaged as in the related art. Absent.

Since the inner diameter of the recess formed in the blind plug is made loosely insertable by a screwdriver of 6 mm or more, a generally used screwdriver is loosely inserted into the recess of the blind plug. The blind plug is inserted and attached to the drainage connection by pushing it into the drainage connection. Also,
When the screwdriver is pulled, only the screwdriver loosely inserted into the recess of the blind plug can be pulled out. Therefore, it is possible to prevent the tip of the blind plug from being broken by using a thin screwdriver as in the related art, and to prevent the blind plug from coming off when the screwdriver is pulled out.

Although the blind plug is made of rubber in this embodiment, the material is not limited to rubber, but may be a resin material or another elastic member having elasticity.

[0027]

As described above, according to the present invention, since the inner diameter of the recess formed in the blind plug is 6 mm or more, a 6 mm screwdriver can be loosely inserted in the recess.
It is attached to the drainage connection pipe using a commonly used screwdriver. Therefore, it is possible to prevent the tip of the blind plug from being broken by using a thin screwdriver as in the related art, and to prevent the blind plug from coming out together when the screwdriver is pulled out.

[Brief description of the drawings]

FIG. 1 is a front view of an air conditioner showing one embodiment of the present invention.

FIG. 2 is a sectional view of the air conditioner showing the embodiment.

FIG. 3 is a rear view of the air conditioner showing the embodiment.

FIG. 4 is a partial cross-sectional view showing a blind plug attached to a drain connection pipe of the air conditioner showing the embodiment.

FIG. 5 is a sectional view showing a state where a blind plug is attached to a drain connection pipe of the air conditioner showing the embodiment.

FIG. 6 is a sectional view showing a state where a blind plug is attached to a drainage connection pipe of the air conditioner showing the embodiment.

FIG. 7 is a sectional view showing a state in which a blind plug is attached to a drain connection pipe of a conventional air conditioner.

FIG. 8 is a sectional view showing a state in which a blind plug is attached to a drain connection pipe of a conventional air conditioner.

[Explanation of symbols]

 Reference Signs List 1 blind plug 2 drain pan 3 drain connection pipe 5 air conditioner 10 drain pan 11, 12 drain connection pipe 12a drain port 14 drain hose 15 blind plug 15a projection 15b collar 15c recess 15d locking groove 16 screwdriver

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tetsushi Yamashita 2-5-5-Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) F24F 1 / 00

Claims (1)

(57) [Claims] A drain pan for receiving drain water from a heat exchanger is provided with a plurality of drain connection pipes, and a drain hose is attached to at least one of the drain connection pipes, while a blind plug is plugged into the remaining drain connection pipes. In order to attach a blind plug made of an elastic material to the drain connection pipe with a screwdriver, the blind plug is formed with a concave portion having a thickness t for loosely inserting the screwdriver. A hole having an inner diameter A to which the blind plug is attached is formed in the connecting pipe, and A-A is provided between the thickness t and the inner diameter A.
An air conditioner characterized by satisfying a relationship of 2t> 6 mm.