JPH0452878B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a drainage pump, and more particularly to a pump for rapidly and continuously discharging unspecified drainage from air conditioning equipment or the like.

BACKGROUND ART Drainage generated from air conditioners and the like is always generated in small amounts, and the amount of drainage is not necessarily constant, and it also contains dust and the like. If such drainage is attempted to be drained using a drain pipe with a small slope, clogging or the like may occur and cause a malfunction, so there is a growing demand for draining the drain using a pump.

However, in order to meet such demands, it is necessary that the pump be able to cope with large fluctuations in the amount of drainage while operating constantly, and that has a structure that does not cause clogging. However, when we tried to select usable pumps from among the conventionally known small pumps, we found that there were no pumps that could be used satisfactorily under the special conditions of use, such as drain discharge from air conditioning equipment.

That is, as a small pump for sending a small amount of water, there is one that has a vertical turbine blade and sucks water from the bottom surface. However, such a pump has the disadvantage that when air is sucked in, the drainage capacity is extremely reduced and it is also prone to clogging with dirt. Furthermore, if you try to supply water while rotating the runner, depending on the water level, the mixture of air and water can make a lot of noise, and the amount of drain generated can fluctuate significantly. It was completely unusable.

Problems to be solved As mentioned above, the system has a variable drainage capacity that can respond to large fluctuations in the amount of inflow water while continuously operating at all times, produces little noise and vibration during drainage, and operates without any problems even if dirt gets mixed in. The purpose of the present invention is to provide a pump suitable for discharging condensate, etc., which can satisfy the special requirement of continuous water flow.

Means for Solving the Problem An object of the present invention is to provide a runner having a specially shaped blade whose diameter narrows toward the bottom with ample space inside a substantially inverted conical body, and to drain air from the upper surface of the body. This is achieved by a drainage pump capable of suction.

That is, the runner of the drainage pump of the present invention includes a disk portion perpendicular to the axis, a plurality of approximately triangular, water-shaped blades provided radially between the lower surface of the disk portion and the shaft, and The blade is formed by integrally molding a plurality of ribs protruding almost parallel to the front in the rotational direction of the blade, and a flat blade provided below the blade including an axis, and the outer edge and axis of the blade are integrally formed. The blade is formed so that the angle between the outer edge of the plate-shaped blade and the axis is smaller than 45°, and the disc part has a connecting portion on both upper and lower sides. The provision of the slit allows for even better functionality.

As shown in FIG. 1, the drainage pump of the present invention has a substantially inverted conical pump body 1, which has a suction port 2 at the bottom sufficient to suck in water, and whose top surface is closed with a lid 5. A runner 10 having a shape is provided. 3 is a discharge port.

A gap 6 is provided between the lid 5 and the shaft of the runner 10 to allow air to be sucked. The runner 10 is directly attached to the shaft 9 of the motor 8, and the drain plate 4 is provided at the upper end of the shaft 11 of the runner 10.

As shown in FIG. 2, the runner 10 has a disk portion 12 disposed perpendicularly to the axis, and approximately triangular blades 13 are provided radially projecting from the lower surface of the disk portion 12. A rib 17 is provided protrudingly. The rib 17 is on the right side of the wing 13 because the runner 10 rotates clockwise when viewed from below. The angle A between the outer edge of the blade 13 and the axis is greater than 45°, that is, the blade 13 has a low height and a gentle slope.

A flat blade 14 is provided below the blade 13 and includes the axis. The angle B formed between the outer edge of the flat blade 14 and the axis is less than 45°, that is, the blade 14 extends downward with its tip portion protruding into the suction port 2.

In addition, a passage 15 that communicates between the upper and lower parts of the runner 10 is provided through the disc part 12 at an intermediate position of the blade 13, and a part of the passage 15 forms a notch 16 that extends to the outer edge of the disc part 12. ing.

The runner 10 having such a shape can rotate while maintaining a sufficient gap between the runner 10 and the inner wall of the main body 1 so as not to be clogged by debris flowing in between the runner 10 and the inner wall of the main body 1.

Effects Even if the drainage pump equipped with the runner 10 having such a special shape is operated when water is not supplied to the suction port 2, it simply spins idly and does not cause any trouble. Water is supplied to inlet 2, and the water level reaches runner 1.
When the tip reaches the tip, the vanes 14 contact the water and rotate the water, so that the water begins to rise along the inner wall surface of the main body due to centrifugal force. On the other hand, as the disc rotates, it applies centrifugal force to the surrounding air and sends the air inside the main body toward the discharge port 3, so that steady air flows from the gap 6 through the upper and lower parts of the disc toward the discharge port 3. This will result in a flow of When the water level gradually rises in this state, the rotational movement of the water by the blades 14 becomes intense, and when the rising water is pressed against the inner wall surface of the main body and reaches the vicinity of the outlet 3, it is entrained in the air flow. The water becomes droplets and is sent out little by little into the discharge pipe, and the higher the water level, the more the effective area of the blades 14 increases and the drainage capacity increases. When the amount of water supplied further increases, the water level rises further, and the blades 13 work to further increase the drainage capacity, but because the angle between the outer edge of the blades 13 and the shaft is large, the effective area of the blades is small for a slight increase in the water level. The amount of water increases rapidly, making it possible to discharge a large amount of water at once. Therefore, when the amount of water supplied is small, the drainage capacity decreases and the water level does not fall below the intake port 2.
Furthermore, even when the amount of water supplied increases, the drainage capacity increases and the water level in the pump does not rise too high.

In this way, the drainage pump of the present invention exhibits a drainage capacity according to the amount of water supplied, so even if the amount of water supplied is fluctuated, it always mixes air and water and continuously discharges it, and it is capable of discharging air and water continuously. Even if there is an inflow of water, no shocking noise will be emitted.

Furthermore, when there is a large amount of water flowing into the pump and the water level inside the pump is high, air is rapidly discharged together with the water.
As a result, air is supplied to the lower surface of the disc part 12 through the gap 6 and the passage 15, which serves to facilitate the drainage of water. In addition, when the amount of water supplied decreases, air is supplied to the lower side of the disk portion 12, which is effective in mitigating changes in the water discharge speed without hindering the water level from decreasing.

The disc part 12 maintains the rotational balance of the runner,
This has the effect of reducing the generation of vibration during operation, and the ribs 17 on the lower surface of the disc portion 12 have the effect of smoothing out the air and water, and together these make the pump even quieter. .

In addition, in the drainage pump of the present invention, the suction port has a sufficient width to suck in the generated water, and the runner is integrally molded in a special shape, so that a space is maintained between the main body and the runner. The drainage function will not be impaired due to the contamination of garbage etc. Even if fibrous dust flows in and gets caught in the passage 15, it will easily flow away through the notch 16 and no malfunction will occur.

Effects of the Invention As explained in detail above, the drainage pump of the present invention is configured by combining a main body with a specific shape and a runner with a specific shape, and when the amount of water flowing in is small, the water is drained little by little. If the amount of inflow is large, it can be drained quickly. The water level inside the pump is always higher than the suction port, and the suction port is always sealed with water.Moreover, it does not generate shocking drainage noise or vibration due to changes in the amount of water supplied, and there is no risk of failure due to clogging with debris. It has the advantage of being maintenance-free, making it suitable as a drain pump for air conditioning equipment.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the structure of a drainage pump according to the present invention, in which a is a plan view and b is a partially cutaway front view. FIG. 2 is a diagram showing the runner of the drainage pump according to the present invention, in which a is a front view, b is a right side view, and c is a bottom view. 1... Main body, 2... Inlet, 3... Outlet, 4
...Draining board, 5...Lid, 6...Gap, 10...
...Runner, 11...Shaft, 12...Disc part, 13...
...wings, 14...feathers, 15...passages, 16...notches, 17...ribs.

Claims (1)

[Claims] 1. A disk portion perpendicular to the axis, and a connection between the lower surface of the disk portion and the shaft so as not to touch the inner wall surface of the main body, which has a substantially inverted conical shape with the axis vertical and a ventilation passage provided on the upper surface. A plurality of approximately triangular wedge-shaped blades provided radially between the blades, a plurality of ribs protruding from the lower surface of the disc portion approximately parallel to the front in the rotational direction of the blades, and a shaft located below the blades. A runner is formed by integrally molding a flat blade provided with a runner, the angle between the outer edge of the blade and the axis is larger than 45°, and the angle between the outer edge of the flat blade and the axis is A drainage pump characterized by an angle smaller than 45°. 2. A disk portion that is perpendicular to the axis and has a slit that connects the upper and lower sides so as not to touch the inner wall surface of the main body, which has a substantially inverted conical shape with the axis being vertical and a ventilation passage provided on the upper surface, and the disk portion of the disk portion. A plurality of substantially triangular, water-shaped wings provided radially between the lower surface and the shaft, a plurality of ribs protruding from the lower surface of the disc portion in substantially parallel forward direction in the rotational direction of the wings, and a plurality of ribs extending downwardly from the wings. A runner is formed by integrally molding a flat blade including an axis at a portion thereof, and the angle between the outer edge of the blade and the axis is larger than 45°, and the angle between the outer edge of the blade and the axis is larger than 45°, A drainage pump characterized in that the angle formed between the outer edge and the axis is smaller than 45°.