JP2022049331A - Impeller of drainage device - Google Patents

Abstract

To provide an impeller of a drainage device that reduces water resistance force upon discharging a water flow to reduce power consumption, thereby reducing vibration and noise.SOLUTION: A plurality of main impellers 4 is provided with blades that extend from an upper shaft 31 toward the peripheral edge of an impeller disc 2 and are curved at an appropriate angle. On the upper edge of the outer end of the curved blade of the main impeller, a stage part 41 having a height difference is provided; and the lower edge of the inner end is inclined downward and extended, is connected to a lower shaft 32 and exposed at a center hole 211, and discharges a water flow. On the lower shaft, a water absorption impeller extending downward is installed.SELECTED DRAWING: Figure 3

Description

The present invention relates to an impeller of a drainage device, and more particularly to an impeller of a drainage device that reduces the resistance of water when discharging a water stream, reduces power consumption, and reduces vibration and noise.

An impeller (see FIG. 1) of a drainage device generally used for an air conditioner (cooler) has a disk body 1 installed, a central shaft 11 provided on the disk body 1, and a plurality of blades 12 radially from the central axis 11. Is installed.

However, the blade 12 of the conventional impeller extends outward from the central axis 11 to the peripheral edge of the disk body 1 in a linear manner. The tangential angle X of the outer diameter of the impeller was large (see FIG. 2), the discharge pressure of the water flow increased, and vibration and noise were very likely to occur when actually used.

Further, many of the blades 12 of the conventional impeller have a right-angled shape, and the front end and the rear end thereof are all at the same height, so that the resistance of the discharged water flow increases (the water pressure at the front end increases) and the water flow. The speed was slowed down, the flow was stagnant, the power consumption could not be reduced, and the power could not be saved. In view of this, the applicant has continued research and experiments without interruption, and has come to design an impeller for a drainage device. It reduces the resistance of the discharged water flow, reduces power consumption, and reduces vibration and noise.

Therefore, the present inventor considers that the above-mentioned drawbacks can be improved, and as a result of repeated diligent studies, he / she has come up with a proposal of the present invention for effectively improving the above-mentioned problems with a rational design.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an impeller of a drainage device. That is, when the impeller is used, the purpose of appropriately reducing the water pressure, reducing the consumption of electric power, and reducing the vibration and noise is achieved.

In order to solve the above problems, the impeller of the drainage device according to the present invention is provided with an impeller disk, a shaft, and a plurality of main impellers. The impeller disc has a center hole, and the shaft penetrates the center hole and is divided into an upper shaft located above the impeller disc and a lower shaft located below the impeller disc. These plurality of main impellers are provided with blades that extend from the upper shaft toward the peripheral edge of the impeller disk and are curved at an appropriate angle, and have a height difference on the upper edge of the outer end of the curved blades of the main impeller. A stage part is provided. The lower edge of the inner end of the main impeller is inclined downward and extends, and is connected to the lower shaft to form a centrifugal impeller having the same curvature as the curved blade of the main impeller. The lower shaft has a water absorption impeller that extends downward.

When the drainage device of the present invention is applied, the curvature of the main impeller and the stepped portion reduce the tangential angle of the outer diameter, reduce the resistance of the discharged water flow, reduce the consumption of electric power, and reduce vibration and noise. Achieve the purpose of reduction.

Further, in the impeller of the drainage device according to the present invention, a plurality of auxiliary impellers having the same degree of curvature as the main impeller are installed between the main impellers to promote water flow and reduce the pressure. To achieve.

Further, in the impeller of the drainage device according to the present invention, the outer ends of these auxiliary impellers exhibit an appropriate downward slope and form a stepped portion having a height difference.

Further, in the impeller of the drainage device according to the present invention, the plurality of main impellers and the plurality of auxiliary impellers to be installed are carried out by three sets, four sets, or five sets of main impellers and auxiliary impellers. ..

Further, in the impeller of the drainage device according to the present invention, the centrifugal impeller is implemented by arranging a plurality of blades. Furthermore, three blades, four blades, or five blades are installed.

The description of the present specification and the drawings will clarify at least the following matters.

It is a block diagram which shows the conventional impeller. It is a figure which shows the tangential angle of a conventional impeller. It is an inclination view of the impeller disk which concerns on one Embodiment of this invention. It is sectional drawing which shows the assembly of the drainage device of this invention. It is a top view which shows the main impeller which concerns on 1st Embodiment of this invention. It is a top view which shows the main impeller which concerns on 2nd Embodiment of this invention. It is a top view which shows the main impeller which concerns on 3rd Embodiment of this invention. It is a figure which shows the centrifugal impeller which concerns on 1st Embodiment of this invention. It is a figure which shows the centrifugal impeller according to the 2nd Embodiment of this invention. It is a figure which shows the centrifugal impeller according to the 3rd Example of this invention. It is a figure which shows the main impeller and the auxiliary impeller which concerns on 1st Embodiment of this invention. It is a figure which shows the main impeller and auxiliary impeller which concerns on 2nd Embodiment of this invention. It is a figure which shows the main impeller and auxiliary impeller which concerns on 3rd Embodiment of this invention. It is a block diagram assembled to the drainage device of this invention. It is a figure which shows the tangential angle of the impeller of this invention. It is a figure which shows the relationship of the critical water level noise-lift of this invention. It is a figure which shows the relationship of the critical water level vibration-lift of this invention. It is a figure which shows the relationship of the load water level noise-lift of this invention. It is a figure which shows the relationship of the load water level vibration-lift of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Needless to say, the present invention is not limited to the following examples, and can be arbitrarily changed without departing from the gist of the present invention.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 to 19. FIG. 3 is an inclined view of the impeller disk according to the embodiment of the present invention. FIG. 4 is a cross-sectional view showing the assembly of the drainage device of the present invention. As shown in the figure, the present invention has an impeller disc 2, a shaft 3, and a plurality of main impellers 4. The impeller disk 2 has a disk 21 and an enclosure 22 surrounding the peripheral edge of the disk 21, and the disk 21 is provided with a center hole 211.

The shaft 3 penetrates the center hole 211 and is divided into an upper shaft 31 located above the disc 21 and a lower shaft 32 located below the disc 21. The plurality of main impellers 4 extend from the upper shaft 31 toward the surrounding peripheral portion 22 of the impeller disk 2 and are provided with blades that are curved at an appropriate angle, and the outer ends of the curved blades of the main impeller 4 are provided. The upper edge is inclined downward with an appropriate inclination to form a stepped portion 41 having a height difference. The lower edge of the inner end of the main impeller 4 is inclined downward and extends, is connected to the lower shaft 32, forms a curve at the same angle as the curved blade of the main impeller 4, and is exposed to the center hole 211. The centrifugal impeller 33 that discharges the water flow is provided. The lower shaft 32 has a water absorption impeller 34 for extending downward to increase the amount of water absorption. FIG. 3 illustrates an embodiment in which three sets of main impellers 4 and three sets of auxiliary impellers 5 are arranged. Both the main impeller 4 and the impeller disc 5 are provided with stage portions 41 and 51 having a height difference.

3, FIG. 4 and FIG. 14 are schematic views of the impeller of the drainage device of the present invention and its assembled structure. As shown in the figure, in a practical application, the impeller A is attached to the pump chamber 61 below the drainage device 6. The drainage device 6 is provided with a suction port 62 and a discharge port 63 in the pump chamber 61, and the shaft 3 and the upper shaft 31 and the lower shaft 32 thereof are driven to rotate by a motor 64 installed in the drainage device 6, and at the same time. The rotation of the main impeller 4 and the auxiliary impeller 5 of the impeller A and the rotation of the water absorption impeller 34 are configured, and the drainage in the water receiving tray of the air conditioning equipment is sucked upward from the suction port 62 and the lower shaft 32, and is moved up. The drainage that has been absorbed toward the water is sent by the centrifugal force of the rotation of the centrifugal impeller 33, and is passed through the center hole 211 to enter the disk 21. The driven and rotated main impeller 4 and auxiliary impeller 5 pump water along the inner surface of the drainage device 6 and discharge the drainage to the outside from the discharge port 63.

The impeller A of the drainage device is configured by the above-mentioned members. When applied to a drainage device, the curvature of the main impeller 4 and the auxiliary impeller 5 of the drainage reduces the tangential angle of the outer diameter, and the step portions 41 and 51 having a height drop reduce the pressure of the water flow. Since the water pressure in the front stage of the impeller 4 decreases and the height in the rear stage is high, a constant water flow rate is maintained, thereby reducing power consumption and achieving the purpose of reducing vibration and noise. Based on actual tests, the flow rate increased by about 15%, the amount of electricity decreased by about 20%, and the noise was significantly reduced by 3-4db.

Further, FIGS. 5 to 7 show examples in which a plurality of main impellers 4 of curved blades of the present invention are arranged. 8 to 10 show that the centrifugal impeller 33 installed on the lower shaft 32 of the present invention is arranged with the same curvature and the same quantity corresponding to the main impeller 4, and three, four, or five curved centrifugal blades are arranged. An embodiment in which the vehicle 33 is arranged is illustrated.

FIG. 11 is a plan view in which the main impeller 4 according to the first embodiment of the present invention is arranged. As shown in the figure, in the embodiment of the inclination view shown in FIG. 3 described above, three auxiliary impellers 5 are installed at an appropriate symmetrical distance between the three main impellers 4. The auxiliary impeller 5 is curved at an appropriate angle and extends from the hole edge of the center hole 211 toward the peripheral edge of the impeller disk 2. At the same time, referring to FIG. 3, the upper edge of the curved outer end of the auxiliary impeller 5 is provided with a step portion 51 that inclines downward toward the outside with an appropriate inclination to form a height difference. The auxiliary impeller 5 improves the effect of lowering the water pressure.

FIG. 12 is a plan view in which the main impeller 4 and the auxiliary impeller 5 according to the second embodiment of the present invention are arranged. As shown in the figure, in the present invention, four main impellers 4 are arranged at equal intervals, and an impeller disk is installed between the main impellers 4 at an appropriate symmetric distance from the hole edge of the center hole 211. Four auxiliary impellers 5 that extend toward the peripheral edge of 2 and are curved at an appropriate angle are installed.

FIG. 13 is a plan view in which the main impeller 4 and the auxiliary impeller 5 according to the third embodiment of the present invention are arranged. As shown in the figure, in the present invention, five main impellers 4 are installed, these main impellers 4 are arranged at equal intervals, and the five main impellers 4 are arranged at an appropriate symmetric distance. Five auxiliary impellers 5 that extend from the hole edge of the center hole 211 toward the peripheral edge of the disk body 2 and are curved at an appropriate angle are installed.

FIG. 14 is a configuration diagram assembled on the drainage device of the present invention. As shown in the figure, in a practical application, the impeller A is attached to the pump chamber 61 below the drainage device 6. The drainage device 6 is provided with a suction port 62 and a discharge port 63 in the pump chamber 61, and a motor 64 installed in the drainage device 6 drives the main impeller 4 and the auxiliary impeller 5 of the impeller A to rotate. When the motor 64 is driven and the impeller A rotates, the drainage collected in the water tray of the air conditioning equipment is sucked from the lower end of the suction port 62, and is pumped along the inner surface of the drainage device 6 to the outside from the discharge port 63. Discharge.

FIG. 15 is a diagram showing the tangential angle of the impeller of the present invention. As shown in the figure, the main impeller 4 of the impeller A of the present invention is curved from the upper shaft 31 toward the peripheral enclosure 22 of the impeller disk 2 at an appropriate angle, and the tangential angle of the outer diameter of the impeller A is tangential. Y is reduced to reduce the pressure of the water flow. When actually used, vibration and noise are surely and effectively reduced.

FIG. 16 is a measurement data diagram showing the critical water level noise-lift of the present invention. As shown in the curve of the actual experiment, when the impeller of the present invention is applied to the drainage device, the "between the head of the critical water level and the corresponding noise level" of the present invention described in the table of this figure is conventional. Compared with the impeller, the present invention significantly reduces the noise of any water head as compared with the conventional impeller.

FIG. 17 is a measurement data diagram showing the critical water level vibration-lift of the present invention. As shown in the curve of the actual experiment, when the impeller of the present invention is applied to the drainage device, the "between the head of the critical water level and the corresponding noise level" of the present invention described in the table of this figure is conventional. Compared with the impeller, the present invention significantly reduces the vibration of any water head as compared with the conventional impeller.

FIG. 18 is a measurement data diagram showing the load water level noise-lift relationship of the present invention. As shown in the curve of the actual experiment, when the impeller of the present invention is applied to the drainage device, the "between the head of the load water level and the corresponding noise level" of the present invention described in the table of this figure is conventionally used. Compared with the impeller, the present invention significantly reduces the noise of any water head as compared with the conventional impeller.

FIG. 19 is a measurement data diagram showing the load water level vibration-lift relationship of the present invention. As shown in the curve of the actual experiment, when the impeller of the present invention is applied to the drainage device, the "between the head of the load water level and the corresponding vibration magnitude" of the present invention described in the table of this figure is conventional. Compared to the impeller, the present invention significantly reduces vibration and noise at any head of water as compared to the conventional impeller.

The above description is for the purpose of explaining the present invention, and should not be construed as limiting or limiting the scope of the invention described in the claims. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims.

1 Disc body 11 Central shaft 12 Blade 2 Impeller disk 21 Disc 22 Enclosure 211 Center hole 3 Shaft 31 Upper shaft 32 Lower shaft 33 Centrifugal impeller 34 Water absorption impeller 4 Main impeller 41 Stage part 5 Auxiliary impeller 51 Stage part 6 Drainage device 61 Pump chamber 62 Suction port 63 Discharge port 64 Motor A Impeller X Tangent angle Y Tangent angle

Claims (5)

An impeller disc, a shaft, and a plurality of main impellers are installed, the impeller disc has a disc and an enclosure surrounding the periphery of the disc, the disc is provided with a center hole, and the shaft is provided in the center hole. It is divided into an upper shaft located above the disc body and a lower shaft located below the disc body, and the plurality of main impellers are curved at an appropriate angle from the upper shaft toward the peripheral edge of the impeller disc. The upper edge of the outer end of the plurality of main impellers is provided with a step portion, and the lower edge of the inner end of the plurality of main impellers is inclined downward and connected to the lower shaft. An impeller of a drainage device, which is exposed in a center hole to form a centrifugal impeller, and the lower shaft has a water absorbing impeller extending downward. The impeller of the drainage device according to claim 1, wherein the centrifugal impeller is installed in the same quantity and with the same curvature corresponding to the plurality of main impellers. Between these plurality of main impellers, a plurality of auxiliary impellers extending from the hole edge of the center hole toward the peripheral edge of the impeller disk at an appropriate symmetric distance and curved at an appropriate angle are installed. The impeller of the drainage device according to claim 1, wherein the impeller is characterized by the above. The impeller of the drainage device according to claim 3, wherein a step portion is provided on the upper edge of the outer end of the plurality of auxiliary impellers. The impeller of the drainage device according to claim 3, wherein the plurality of main impellers and the plurality of auxiliary impellers are installed in an arrangement of three sets, four sets, or five sets.

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