JPS6066033A - Draining device of air conditioner - Google Patents

Abstract

PURPOSE:To efficiently drain water by providing a rotor having a pair of pumping units expanding upwardly to a vertical motor rotational shaft disposed in a drain pump case and differentiating the position of a pumping hole of the rotor. CONSTITUTION:If a motor 5 rotated when water level in a drain pan 2 is high, a rotor 6 rotates, sucking holes 6a, 6b are dipped in drain water 2'. Accordingly, the water 2' is raised along triangular pumping grooves A, B by a centrifugal force, ejected from exhausting holes 6c, 6d, and guided along oblique surfaces 4c, 4d, 4e of the case 4 to the outlet hole 4b. Here, when the water level decreases from the sucking hole 5a, only the sucking hole 6b is acted, the water 2' is raised along the pumping groove B by the centrifugal force, and ejected by the hole 6d. Accordingly, when the level of the water 2' is higher than the hole 6a, the recovery amount is more, while when lower, the recovery amount is less to obtain the effect of automatically deciding the recovery amount in response to the storage amount.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a drainage device used for pumping wastewater from an air conditioner upward.

Conventional configuration and its problems Generally, when draining water from an air conditioner, etc.
A rotating body immersed in drain water is rotated by a motor,
Drainage devices using so-called centrifugal pumps, which use the centrifugal force of the rotating body to splash drain water, are often used. In such a drainage device, since a large amount of drain water is no longer generated, the amount recovered is relatively small, and the motor and the like are made smaller and cheaper. Despite this, in air conditioners, the amount of waste water to be drained may increase depending on external conditions, and in this case, with known drainage devices, the amount of waste water (collected amount) is always constant, so under these conditions, the operating rate of the motor is It gets expensive.

On the other hand, increasing the amount recovered by the rotating body in order to lower the operating rate of the motor has the disadvantage that the motor will have to stop operating more frequently, shortening the life of the motor.In any case, a good drainage system cannot be provided. Not yet.

Purpose of the Invention Therefore, the present invention solves the problem of conventional methods, in which the amount of water discharged is large and fx-
) The object of the present invention is to provide a drainage device capable of efficiently draining water by automatically increasing the amount of recovery when the water level drops to a certain level and decreasing the amount of recovery when the water level drops to a certain level.

Structure of the Invention In order to achieve this object, the present invention provides a rotating body having at least a pair of pumping parts such as pumping grooves, in which the height positions of the suction openings of the pumping parts with respect to the drain water are different, and the rotating body is arranged vertically. When the water level is low, the water is pumped up into the groove with the suction opening located at a lower position, and when the water level is high, it is pumped up by both grooves. It is designed to reduce the operating rate by pumping up and changing the recovery amount, and to enable efficient drainage. ○Explanation of the embodiment The following is an example of an embodiment of the present invention, using a drainage system for an air conditioner as an example, according to the drawings. explain.

In the figure, 1 is a cooler in an air conditioner (not shown), and 2 is a drain tank for storing drain water 2' dehumidified by the cooler, which is disposed inside the air conditioner housing. Reference numeral 3 denotes a drainage device disposed within the drain tank 2, which pumps drain water 2' into 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 3 includes a drain pump case 4, a motor 5, a rotating body 6 rotated by the motor 6, and a float switch 8 for stopping the operation of the motor 5 according to the amount of drain water. In other words, drain pump case 4B,
The inlet opening end 4a is immersed in the drain water 2' of the drain tank 2, and the outlet opening end 4b connected to the above-mentioned drain port is located at the upper part. The motor 5 has its rotating shaft 6a extending vertically into the drain pump case 4, and the rotating body 6 is fixed to the rotating shaft 5a. The drain case 4, motor 6, and rotating body 6 constitute a drain pump 7.

FIG. 2 is a detailed view of the drain pump 7. The drain pump case 4 has inclined surfaces 4c, 4d, and 4e for guiding the water splashed up by the rotating body 6, and a recess 4f for housing the motor 5. The height of the drain tank was designed to avoid increasing the height of the drain tank due to the motor 6. In other words, the overall height of the drain tank is between the outlet opening end 4b and the inclined surface 4 that guides water there.
It is determined by the height of e.

The rotating body 6 has a triangular pyramid shape and a substantially S-shaped cross section. That is, on both sides, a pair of pumping grooves A and B are formed as a pumping part that expands upward relative to the rotating shaft 5a, forming an S-shape, with the lower ends serving as suction openings 6a and 6b, and the upper end serving as suction openings 6a and 6b. is used as the discharge opening 6c, ecl. Among the suction openings 6a and 6b, the tip of the rotating body 6 is cut out at a right angle so that the suction opening 6a of the pumping groove A is located at a higher level than the suction opening 6b of the pumping groove B. In other words, when the amount of drain water 2' to be drained is large and the water level in the drain tank 2 becomes high, the suction opening 6a acts together with the suction opening 6b.
works only when the water level is low. Further, the rotating body 6 has a fixing hole 6e in which the rotating shaft 6a of the motor 6 is inserted, and is fixed to the rotating shaft 6a.

In the above configuration, when the water level in the drain pan 2 is high, if the motor 5 rotates, the rotating body 6 also rotates, and the suction opening 6a
, 6b is immersed in drain water 2', so drain water 2'
is raised along the triangular cone-shaped pumping groove B by centrifugal force, and the discharge opening 6c.

6d, and the inclined surface 4C of the drain pump case 4
, 4d, 4e to the outlet opening 4b.

If the water level falls below the suction opening 6a, only the suction opening 6b acts, and the drain water 2' rises along the pumping groove B due to centrifugal force and is jetted out through the suction opening 6d. Therefore, when the water level of the drain water 2' is higher than the suction opening 6a, the amount of recovery is large, and when the water level is lower than the suction opening 6a, the amount of recovery is reduced, and the effect is that the amount of recovery can be automatically determined according to the amount of water stored. is obtained.

Effects of the Invention As is clear from the above explanation, the drainage device of the present invention has a rotary body disposed within a drain pump case and having a pair of pumping portions that extend upward with respect to the vertical rotation axis of the motor rotor. Since the opening positions of the suction openings in the pumping part of the rotating body are different, when the amount of drainage increases, the amount of recovery can be increased, and the operating rate of the motor does not increase.
Efficient drainage can be carried out without causing too much trouble or stopping the motor.

[Brief explanation of the drawing]

FIG. 1 is a sectional view schematically showing an air conditioner equipped with a drainage device according to an embodiment of the present invention, FIG. 2 is a detailed sectional view of the drainage device, and FIG. 3 is a perspective view of a rotating body. shows. 2... Drain tank, 4... Drain pump case, 6... Motor, 6... Rotating body, 6a16b... Suction opening Part, 7...
...Drain pump, A, E...Pumping groove (
Collecting soil). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] It is equipped with a drain tank that stores drain water from a heat exchanger, etc. of an air conditioner, and a drain pump that pumps up the drain water stored in the drain tank, and the drain pump has an inlet opening end in the drain water of the drain tank. a drain pump case in which the drain water is immersed and the outlet opening end is located at the top; a rotary body rotatably provided within the drain pump case for pumping drain water; and a rotary body with a rotating shaft positioned in a vertical direction to rotate the rotary body. An air conditioner comprising a motor, the rotating body having at least a pair of pumping parts extending upward with respect to the rotating shaft, and openings for sucking drain water in the pumping parts having different height positions. etc. drainage equipment.