JPS6313099B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a drainage device used for pumping drain water in an air conditioner or the like to an upper part.

Conventional Structure and Problems Conventionally, as a drainage device for pumping drain water upward, a centrifugal pump consisting of an impeller and a casing that houses the impeller and guides the water produced by the impeller to a predetermined location has been generally used. However, since there is little margin between the impeller and the casing, there is a risk that dirt and the like contained in the drain water may become trapped between the impeller and the casing. Furthermore, when a filter is provided to prevent the ingress of dirt, etc., the filter needs to be cleaned regularly.

On the other hand, as a measure against garbage, the applicant has
As shown in the figure, a hollow cylindrical rotary body 1 is provided at an angle with respect to the rotary shaft 2a of a motor 2 located vertically, and the rotary body 1 is rotated to splash water, which is then received by a drain pump case 3. I'm proposing something. However, this system has a problem in that the suction opening 1a of the rotating body 1 is limited and a sufficient amount of water cannot be pumped. Furthermore, although the rotating body 1 is composed of hollow cylindrical bodies 1b and 1c, if dust larger than the inner diameter of the cylinders, such as a film of water scale, is generated, there is a possibility that the insides of the cylindrical bodies 1b and 1c become clogged.

OBJECTS OF THE INVENTION Therefore, an object of the present invention is to provide a drainage device that does not cause locking due to garbage, etc., which is a conventional problem, under any circumstances, and can ensure a sufficient amount of pumped water.

Structure of the Invention In order to achieve this object, the present invention provides a rotating body having one or more grooves inclined to the rotating shaft of a vertically positioned motor, and rotating the rotating body,
By receiving the water in the drain pump case, the groove is open on one side, which prevents dirt from clogging and ensures a sufficient amount of pumped water.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, taking a drainage system for an air conditioner as an example.

In the figure, 4 indicates a cooler in an air conditioner (not shown), and 5 indicates a drain pan for storing drain water 6 dehumidified by the cooler, which are arranged inside the air conditioner housing. 7 is this drain pan 5
A drainage device disposed inside pumps up drain water 6 to a drain port (not shown) formed in the upper part of the air conditioner housing and discharges it to the outside of the housing. That is, this drainage device 7 comprises a drain pump case 8, a motor 9, a rotating body 10 rotated by the motor 9, and a float switch 11 that stops the operation of the motor 9 depending on the amount of drain water.

That is, the drain pump case 8 has its inlet opening end 8a immersed in the drain water 6 of the drain pan 5,
The outlet opening end 8b connected to the above-mentioned drain port is located at the upper part. The motor 9 has a rotating shaft 9a extending vertically into the drain pump case 8, and a rotating body 10 is fixed to the rotating shaft 9a. Motsuto drain pump case 8, motor 9, rotating body 10
This constitutes the drain pump 12.

FIG. 4 is a detailed view of the drain pump 12, in which the drain pump case 8 has inclined surfaces 8c, 8d, and 8e for guiding water splashed up by the rotating body 10, and a recessed portion 8f for housing the motor 9. ,
Care has been taken not to increase the height of the drain pump 12 due to the motor 9. In other words, drain pump 1
2 is determined by the height of the outlet opening end 8b and the sloped surface 8e that guides water thereto.

The rotating body 10 has a triangular pyramid shape and a cross section of approximately S.
It has an S-shape with grooves 10a and 10b formed on both sides so as to expand upward at a predetermined angle, and suction openings 10a' and 10b are provided at the lower ends of the grooves 10a and 10b, respectively. ', and have discharge openings 10a'' and 10b'' at their upper ends, respectively. Further, the grooves 10a and 10b support both by sharing a support plate 10c that constitutes each groove. Then, the rotating shaft 9a of the motor 9 is fixed to the support plate 10c, and the groove body 10a,
10b is inclined so as to extend upward at a predetermined angle with respect to the rotating shaft 9a.

In the above configuration, when the motor 9 rotates, the rotating body 10 also rotates, and since the suction openings 10a' and 10b' are immersed in the drain water 6, the drain water 6 is drawn into the inner surfaces of the grooves 10a and 10b by centrifugal force. , and is ejected from the discharge openings 10a'', 10b'', and the slopes 8c, 8d, and 8e of the drain pump case 8.
along the outlet opening end 8b.

Even if the drain water 6 is mixed with dirt, the drain 1
As water rises along the inner surfaces of 0a and 10b, dirt also rises. Also grooves 10a, 10b
Since it is formed in the shape of a groove, it is naturally open on one side and does not form a film due to water scale or the like.

On the other hand, unlike the conventional suction opening 1a of the rotary body 1, where the suction is only in a downward direction, the grooves 10a, 10
The suction in step b has the advantage that the amount of water pumped is large because the suction is carried out from the side in all areas where the rotating body 10 is immersed in the drain water 6.

In the above embodiment, the grooves 10a and 10b are a pair, that is, two grooves, but it may be one groove or three or more grooves. In short, it is sufficient to provide it at an angle with respect to the vertical rotation axis 9a so that the distance from the rotation axis 9a increases upward.

Further, although the cross-sectional shapes of the grooves 10a and 10b are U-shaped in FIG. 5, they may also be U-shaped or V-shaped, as long as the grooves are formed.

Effects of the Invention As is clear from the above description, the drainage device of the present invention has a rotating body attached to a vertical motor rotating shaft disposed inside the drain pump case, and a groove on the rotating body that is inclined so as to expand upward. By rotating this groove, the drain water is splashed upward along the inner surface of the groove and drained, so there is no clogging with dirt, etc.
In addition, the effect of securing a sufficient amount of pumped water can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a detailed sectional view of a conventional drainage device, FIG. 2 is a perspective view of a conventional rotating body, and FIG. 3 is a cross-sectional view schematically showing an air conditioner equipped with a drainage device according to an embodiment of the present invention. FIG. 4 is a detailed sectional view of the drainage device, and FIG. 5 is a perspective view of the rotating body. 5...Drain pan, 8a...Inlet opening end, 8b
... Outlet opening end, 8 ... Drain pump case, 1
0... Rotating body, 9a... Rotating shaft, 9... Motor, 1
0a, 10b...Groove.

Claims (1)

[Claims] 1. A drain pan that stores drain water, a drain pump case whose inlet opening end is immersed in the drain water of the drain pan, and whose outlet opening end is located at the top, and a drain pump case that is rotatably provided inside the drain pump case and that stores the drain water. It consists of a rotating body that lifts water, and a motor that rotates the rotating body with a rotating shaft positioned in a vertical direction, and the rotating body is provided with one or more grooves that are inclined so as to expand upward with respect to the rotating shaft. drainage equipment for air conditioners, etc.