JP2018119430A - Drain impeller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain impeller which improves water pumping efficiency and decrease generation of air bubbles.SOLUTION: A drain impeller 10 is provided with one shaft center 11, one annular bottom plate 21 and one annular wall surface 31. The shaft center 11 causes one end to have a linkage tank 13, is used for linking one driving shaft and allows a plurality of support ribs 15 to be extended toward a radial direction outer side. The annular bottom plate 21 is provided on bottom parts of the plurality of support ribs 15, the annular bottom plate 21 and the shaft center 11 are separated from each other, a plurality of engraving parts are formed among the shaft center 11, the plurality of support ribs 15 and the annular bottom plate 21, and a bottom surface of the annular bottom plate 21 is formed in wavy undulations. The annular wall surface 31 includes one upper edge part 33 and one lower edge part 35, is connected with an outer end part of each support rib 15 and is connected to the annular bottom plate 21 by the lower edge part 35, the upper edge part 33 is undulated in a wave shape and the lower edge part 35 is undulated in a wave shape.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drainage device, and more particularly to a drainage impeller for a drainage device.

  Air conditioner drains generate noise. Part of the noise is due to vibration caused by resistance caused by collision of the impeller with bubbles in the condensed water, or sound generated by bursting of the bubbles due to impact. Therefore, if the impact of the impeller on the bubbles during pumping can be reduced, the generation of noise can be effectively suppressed.

  According to the drainage device disclosed in Patent Document 1, the large-diameter impeller is divided into an inner impeller and an outer impeller, and is alternately installed inside and outside. When the spiral is formed by the alternating arrangement of the impellers, bubbles are released downstream in the rotation direction, and the impact on the impeller is reduced. As a result, the noise generated by the bursting of the bubbles and the vibration caused by the load caused by the impact of the gas-liquid mixed fluid on the impeller are reduced.

  In addition, the present applicant disclosed in Patent Document 2 a drain impeller for a drainage device for air conditioning equipment. In this drain impeller, one annular fin plate undulating in a wavy shape is formed at the bottom edge of the support rib. The annular fin plate reduces noise by a guide method. And the disturbance which a swirl produces is reduced, the vibration of the whole structure is reduced, and noise is reduced.

Taiwan Patent No. 499724 Taiwan Utility Model Registration No. 308386

The impeller structure of the drainage device disclosed in Patent Document 1 can reduce noise. However, the present applicant considered that an impeller having a further excellent effect can be obtained if the structure of the impeller is improved and the pumping efficiency can be increased.
Moreover, although the drainage impeller disclosed in Patent Document 2 reduces the generation of noise by the wavy undulating structure at the bottom of the annular fin plate, the present applicant considered that there is room for further improvement in the structure. .
The main object of the present invention was created in view of the above-mentioned problems, and is to provide a drainage impeller that can improve the water pumping efficiency and reduce the generation of bubbles.

  In order to achieve the above-described object, the drainage impeller of the present invention includes one shaft center, one annular bottom plate, and one annular wall surface. One end of the shaft center has a connecting tank and is used to connect one drive shaft, and a plurality of support ribs are extended outward in the radial direction. The annular bottom plate is provided at the bottom of the plurality of support ribs, the annular bottom plate and the shaft center are spaced apart, and a plurality of engraving portions are formed between the shaft center, the plurality of support ribs, and the annular bottom plate, The bottom surface of the annular bottom plate is formed in a wavy undulation. The annular wall has one upper edge and one lower edge defined, is connected to the outer end of each support rib, is connected to the annular bottom plate by the lower edge, The part is undulating and the lower edge is undulating.

  As a result, the present invention can increase the pumping efficiency and at the same time reduce the generation of bubbles.

It is a perspective view of one Example of this invention. It is a perspective view which shows one Example of this invention from another angle, and shows a some engraving part. It is a front view which shows one Example of this invention. It is sectional drawing which shows the use condition of one Example of this invention.

  In order to describe the features of the present invention, the following examples will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the drainage impeller 10 according to an embodiment of the present invention includes one shaft center 11, one annular bottom plate 21, and one annular wall 31.

  The shaft center 11 has a connecting tank 13 at one end, and is used to connect one drive shaft 90. A plurality of support ribs 15 are extended outward in the radial direction. Thereby, the effect of the pumping water of the present invention is achieved.

  The annular bottom plate 21 is provided at the bottom of the plurality of support ribs 15. The annular bottom plate 21 and the shaft center 11 are separated from each other with a certain distance, and a plurality of engraving portions 23 are formed between the shaft center 11, the plurality of support ribs 15, and the annular bottom plate 21. The bottom surface is formed in a wavy undulation. This provides an auxiliary pumping effect to the annular bottom plate 21. The reason for not having a sawtooth shape is that when the sawtooth shape is used, the pumping effect is better than the waved undulation, but the surface of the sawtooth and the bubble collide with the front, and the impact on the bubble is large, causing vibration and bursting, noise. It is because it generates. Further, the annular bottom plate 21 has a weight shape and gradually increases as the distance from the axis 11 increases. With the above-described structure, the annular bottom plate 21 is harmonized with the spiral shape and suppresses the generation of bubbles.

  The annular wall 31 has one upper edge 33 and one lower edge 35 defined, and is connected to the outer end of each support rib 15, and is connected to the annular bottom plate 21 by the lower edge 35. Has been. The upper edge 33 undulates and the lower edge 35 undulates. The structural characteristics of the upper edge 33 and the lower edge 35 undulatingly and the structural characteristics of the lower edge 35 and the annular bottom plate 21 can increase the pumping efficiency, and the drain impeller 10 Bubbles generated when rotating can be reduced. In the present embodiment, the connecting portion between the lower edge 35 and the annular bottom plate 21 has a round shape. With such a structure, the generation of bubbles can be reduced, but the connecting portion between the lower edge portion 35 and the annular bottom plate 21 is close to the bottom portion of the drainage impeller 10, and in many cases the liquid level of the vortex flow Located below. Therefore, whether or not the connecting portion between the lower edge 35 and the annular bottom plate 21 is rounded can be determined based on the use environment, and is not an essential requirement of the present invention. The wavy undulations of the upper edge 33 and the wavy undulations of the lower edge 35 are symmetrical to each other, and the top of the wavy undulation of the upper edge 33 corresponds to the top of the wavy undulation of the lower edge 35, and The bottom of the wavy undulation of the edge 33 corresponds to the bottom of the wavy undulation of the lower edge 35. Further, the wavy undulations of the upper edge 33 and the wavy undulations of the lower edge 35 have the same effect even if they are not symmetrical with each other (not shown).

  In the present embodiment, the top portions of the plurality of support ribs 15 are in contact with the upper edge portion 33 of the annular wall surface 31. When the tops of the plurality of support ribs 15 are higher than the liquid level of the spiral, air is easily caught in water and bubbles are generated. The advantage that the generation of bubbles can be avoided by setting the top portions of the plurality of support ribs 15 lower than the upper edge portion 33 so that the liquid level of the spiral is higher than the top portions of the plurality of support ribs 15 and lower than the upper edge portion 33. There is. Moreover, in the use environment in which the top portions and the upper edge portions 33 of the plurality of support ribs 15 are located below the liquid level of the spiral, it is not necessary to limit the height of the top portions of the plurality of support ribs 15. In addition, structural modifications can be made based on various usage environments.

  The structure of one preferred embodiment of the present invention has been described above. The usage state of one preferred embodiment of the present invention will be described below.

  As shown in FIGS. 1, 3, and 4, when the present invention is used, one end of a drive shaft 90 is connected to a motor 92. The connecting tank 13 is assembled to the other end of the drive shaft 90. The drain impeller 10 is provided in one water collection tank 91. When the motor 92 operates by driving the drain impeller 10, the condensate in the water collection tank 91 is interlocked to form a spiral. The structural feature in which the bottom surface of the annular bottom plate 21 undulates and the structural feature in which the upper edge 33 and the lower edge 35 undulate have a function of assisting pumping water, In addition, it is difficult to generate bubbles. In addition, the connecting portion between the lower edge 35 and the annular bottom plate 21 is rounded, which helps to reduce the generation of bubbles. Finally, the condensed water is discharged from one drain outlet 93 in conjunction with the spiral.

  As described above, the present invention has a structural feature in which the bottom surface of the annular bottom plate 21 undulates and a structural feature in which the upper edge 33 and the lower edge 35 of the annular wall 31 undulate. Thus, the efficiency of pumping water can be increased and the generation of bubbles can be reduced.

DESCRIPTION OF SYMBOLS 10 Drainage impeller 11 Axis center 13 Connection tank 15 Support rib 21 Annular bottom plate 23 Engraving part 31 Annular wall 33 Upper edge 35 Lower edge 90 Drive shaft 91 Catchment tank 92 Motor 93 Drainage port

Claims (7)

It has one axis, one annular bottom plate and one annular wall,
The shaft center has a connecting tank at one end and is used to connect one drive shaft, and a plurality of support ribs are extended outward in the radial direction.
The annular bottom plate is provided at the bottom of the plurality of support ribs, the annular bottom plate and the shaft center are separated from each other, and a plurality of pieces are provided between the shaft center, the plurality of support ribs, and the annular bottom plate. A sculpture part is formed, and the bottom surface of the annular bottom plate is formed in a wavy undulation,
The annular wall surface includes one upper edge and one lower edge, and is connected to an outer end of each of the support ribs, and is connected to the annular bottom plate by the lower edge, A drainage impeller characterized in that an upper edge is undulated and the lower edge is undulated.   The wavy undulations of the upper edge and the wavy undulations of the lower edge are symmetrical to each other, and the top of the wavy undulation of the upper edge corresponds to the top of the wavy undulation of the lower edge 2. The drainage impeller according to claim 1, wherein a bottom point of the wavy undulation of the upper side edge corresponds to a bottom point of the wavy undulation of the lower side edge.   The drainage impeller according to claim 1, wherein a connecting portion between the lower edge portion and the annular bottom plate has a round shape.   2. The drainage impeller according to claim 1, wherein the undulations of the upper edge and the undulations of the lower edge are not symmetrical with each other.   The drain impeller according to claim 1, wherein the top portions of the plurality of support ribs are formed lower than the upper edge portion of the annular wall surface.   2. The drainage impeller according to claim 1, wherein the annular bottom plate is formed in a conical shape, and is formed so as to be lower as it approaches the axis and higher as it moves away from the axis.   The drain impeller according to claim 1, wherein the bottom surface of the annular bottom plate undulates in a circumferential direction.

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