Drainage impeller with balance holes
阅读说明:本技术 具有平衡孔的排水叶轮 (Drainage impeller with balance holes ) 是由 萧裕明 于 2019-04-26 设计创作,主要内容包括:一种具有平衡孔的排水叶轮,包含有:一轴心,径向向外延伸多个主叶片;一环状底板,设于该多个主叶片的底部,该环状底板的底面沿着该环状底板外围的圆周方向呈波浪状起伏;一环状壁,以其底缘设于该环状底板的外缘,且该环状壁的底缘随该环状底板的波浪状起伏而起伏;该环状底板设有上下贯穿的多个平衡孔,该多个平衡孔靠近该环状壁。各该平衡孔位于各该主叶片的下方或其旋转方向的后方,且与各该主叶片后方的空间相连通。(A discharge impeller with balance holes, comprising: a shaft having a plurality of primary blades extending radially outwardly therefrom; the annular bottom plate is arranged at the bottoms of the main blades, and the bottom surface of the annular bottom plate undulates in a wavy manner along the circumferential direction of the periphery of the annular bottom plate; the bottom edge of the annular wall is arranged on the outer edge of the annular bottom plate, and the bottom edge of the annular wall fluctuates along with the fluctuation of the wave shape of the annular bottom plate; the annular bottom plate is provided with a plurality of balance holes which penetrate through the annular bottom plate up and down, and the balance holes are close to the annular wall. Each balancing hole is positioned below each main blade or behind the main blade in the rotating direction and communicated with the space behind each main blade.)
1. A discharge impeller having balance holes, comprising:
the top end of the shaft center is provided with a connecting groove used for being connected with a driving shaft to be driven to rotate, the shaft center radially and outwards extends a plurality of main blades in a vertical wall shape, and a virtual extending line is defined according to a virtual line formed by the outwards extending direction of each main blade;
the annular bottom plate is arranged at the bottoms of the main blades and is separated from the axis by a preset distance, so that a plurality of hollow parts are formed among the axis, the main blades and the annular bottom plate; and
an annular wall, which is arranged at the outer edge of the annular bottom plate by the bottom edge;
the method is characterized in that:
the annular bottom plate is provided with a plurality of balance holes which penetrate through the annular bottom plate up and down, the balance holes are close to the annular wall, and the distance between the hole edge and the annular wall is less than 1 mm;
according to the rotation direction of the axle center and a plurality of main blades, each balancing hole is positioned below each main blade or behind the rotation direction of the virtual extension line of the main blade, is communicated with the space behind each main blade and is not positioned in front of the rotation direction of the virtual extension line of the main blade; when one balancing hole is positioned behind one main blade, the distance between the edge of the balancing hole and the main blade is less than 1 mm, and the center of the balancing hole is closer to the main blade and is further away from other main blades.
2. The discharge impeller with balance holes as claimed in claim 1, wherein each of the main blades is connected to the annular wall.
3. The impeller according to claim 1, wherein the tip of each of the main blades is spaced apart from the annular wall by a predetermined distance to form a gap, and each of the balance holes is located in each of the gaps.
4. The impeller for water discharge with balance holes as claimed in claim 1, wherein the bottom surface of the annular bottom plate undulates in a wave-like manner along a circumferential direction of the outer periphery of the annular bottom plate; the bottom edge of the annular wall undulates along with the undulation of the annular bottom plate, the top edge of the annular wall undulates in an undulation manner, the top edge of the annular wall is higher when the bottom edge is higher, and the top edge is lower when the bottom edge is lower.
5. The impeller as claimed in claim 4, wherein the virtual extension line of each main blade meets the top edge of the annular wall at a position of a peak in a wave-like undulation.
6. The impeller as claimed in claim 4, wherein the virtual extension line of each main blade meets the lower point of the top edge of the annular wall in a wavy form.
7. The impeller of claim 1, wherein the bottom edge of the annular wall and the top edge of the annular wall are substantially horizontal without undulations.
8. The impeller according to claim 1, wherein the top edge of each main blade is flush with the top edge of the annular wall at the position where the virtual extension line of each main blade meets the annular wall.
9. The impeller according to claim 1, wherein the top edge of each main blade is lower than the top edge of the annular wall where the virtual extension line of each main blade meets the annular wall.
10. The impeller for water discharge according to claim 1, wherein when a balancing hole is formed at the rear of a main blade, the hole edge of the balancing hole is connected to the rear surface of the main blade.
11. The impeller according to claim 1, further comprising a plurality of secondary blades disposed on the top surface of the annular bottom plate, wherein the plurality of secondary blades extend radially along the radial direction of the shaft center, the plurality of secondary blades are spaced from the shaft center by a predetermined distance without contacting the shaft center, the plurality of secondary blades do not extend to the plurality of hollow portions, and a virtual line formed in the extending direction of each secondary blade defines a virtual extending line; according to the rotation direction of the shaft center and a plurality of secondary blades, the balance hole is arranged below each secondary blade or behind the rotation direction of the virtual extension line of each secondary blade, is communicated with the space behind each secondary blade and is not positioned in front of the rotation direction of the virtual extension line of each secondary blade; when one balancing hole is positioned behind one secondary blade, the distance between the edge of the balancing hole and the secondary blade is less than 1 mm, and the center of the balancing hole is closer to the secondary blade and is further away from other main blades or secondary blades.
12. The discharge impeller with balance holes of claim 11, wherein each of the secondary vanes is connected to the annular wall.
13. The discharge impeller with balance holes of claim 11, wherein each of the main blades is connected to the annular wall.
14. The impeller according to claim 11, wherein each of the secondary blades is spaced apart from the annular wall by a predetermined distance to form a secondary gap, and the annular bottom plate in each of the secondary gaps is provided with the balance hole.
15. The impeller for discharging water according to claim 11, wherein each of the main blades has a tip end spaced apart from the annular wall by a predetermined distance to form a gap, and each of the balance holes is located in each of the gaps.
16. The impeller for water discharge with balance holes as claimed in claim 11, wherein the bottom surface of the annular bottom plate undulates in a wave-like manner along a circumferential direction of the outer periphery of the annular bottom plate; the bottom edge of the annular wall undulates along with the undulation of the annular bottom plate, the top edge of the annular wall undulates in an undulation manner, the top edge of the annular wall is higher when the bottom edge is higher, and the top edge is lower when the bottom edge is lower.
17. The impeller of claim 16, wherein the virtual extension line of each main blade meets the top edge of the annular wall at a location of a peak in the undulated form.
18. The impeller as claimed in claim 16, wherein the virtual extension line of each secondary blade intersects the top edge of the annular wall at a location of a peak in a wave-like undulation.
19. The impeller of claim 16, wherein the virtual extension line of each main blade intersects the top edge of the annular wall at a low point where the top edge undulates.
20. The impeller as claimed in claim 16, wherein the virtual extension line of each secondary blade intersects the top edge of the annular wall at a low point where the top edge undulates.
21. The impeller of claim 11, wherein the bottom edge of the annular wall and the top edge of the annular wall are substantially horizontal without undulations.
22. The impeller according to claim 11, wherein the top edge of each main blade is flush with the top edge of the annular wall where the virtual extension line of each main blade meets the annular wall.
23. The impeller according to claim 11, wherein the top edge of each of the secondary blades is flush with the top edge of the annular wall where the virtual extension line of each of the secondary blades meets the annular wall.
24. The impeller according to claim 11, wherein the top edge of each main blade is lower than the top edge of the annular wall where the virtual extension line of each main blade meets the annular wall.
25. The impeller according to claim 11, wherein the top edge of each of the secondary blades is lower than the top edge of the annular wall where the virtual extension line of each of the secondary blades meets the annular wall.
26. The impeller for water discharge according to claim 11, wherein when a balancing hole is located at the rear of a secondary blade, the hole edge of the balancing hole is connected to the rear surface of the secondary blade.
27. The impeller for water discharge according to claim 11, wherein when a balancing hole is formed at the rear of a main blade, the hole edge of the balancing hole is connected to the rear surface of the main blade.
28. The impeller for discharging water with balance holes as claimed in claim 11, wherein the height of the top edge of the plurality of the main blades is the same as the height of the top edge of the plurality of the secondary blades.
29. The impeller according to claim 11, further comprising a plurality of auxiliary blades disposed on the top surface of the annular bottom plate, wherein the plurality of auxiliary blades extend radially along the axial center and are shorter than the plurality of secondary blades, the plurality of auxiliary blades are spaced apart from the axial center by a predetermined distance without contacting the axial center, the plurality of auxiliary blades do not extend to the plurality of hollow portions, and a virtual line formed in a direction in which each of the plurality of auxiliary blades extends defines a virtual extension line.
30. The discharge impeller with balance holes of claim 29, wherein a plurality of the auxiliary blades are connected to the annular wall.
31. The impeller for discharging water having the balancing hole as set forth in claim 29, wherein a plurality of the auxiliary blades are spaced apart from the annular wall by a predetermined distance.
32. The impeller for water drainage with balancing hole as claimed in claim 29, wherein, depending on the rotation direction of the shaft center and the plurality of auxiliary blades, a balancing hole is formed below or behind each of the auxiliary blades and communicates with the space behind each of the auxiliary blades without being located in front of the auxiliary blade; when one balancing hole is positioned at the rear of one auxiliary blade, the distance between the hole edge of the balancing hole and the auxiliary blade is less than 1 mm.
33. The impeller for water drainage with balance holes as claimed in claim 29, wherein the height of the top edge of the main blades is the same as the height of the top edge of the secondary blades, and the height of the top edge of the auxiliary blades is the same as the height of the top edge of the main blades.
34. The impeller for water drainage with balance holes as claimed in claim 29, wherein the height of the top edge of the main blades is the same as the height of the top edge of the secondary blades, and the height of the top edge of the auxiliary blades is different from the height of the top edge of the main blades.
35. The impeller as claimed in claim 29, wherein the virtual extension line of each primary blade and the virtual extension line of each secondary blade meet at a peak position where the top edge of the annular wall undulates in a wave-like manner; the virtual extension line of each auxiliary blade is connected with the low point position of the top edge of the annular wall in a wavy fluctuation mode.
36. The impeller as claimed in claim 29, wherein the virtual extension line of each primary blade and the virtual extension line of each secondary blade meet at a low point where the top edge of the annular wall undulates; the virtual extension line of each auxiliary blade is connected with the position of a high point of the top edge of the annular wall which undulates in a wave shape.
Technical Field
The present invention relates to a drainage device, and more particularly, to a drainage impeller having balancing holes provided in a drainage pump.
Background
The discharge pump for the cold air generates noise, which is caused in part by the sound generated by the rupture of the blades on the discharge impeller caused by the impact of the air bubbles entrained in the water, or the vibration caused by the change of resistance after the impact of the air bubbles. Therefore, if the impact force or condition of the blades on the impeller on the bubbles during water stirring can be reduced, the noise can be effectively reduced.
Taiwan patent No. I499724 provides a drainage pump in which a large-diameter impeller is divided into inner and outer impellers (the impeller is preferably called a blade), and the inner and outer blades are alternately arranged, so that bubbles escape to the downstream side in the rotational direction to reduce the impact on the impeller when a vortex is formed, and noise due to the bubble breakage and vibration due to the collision load of a gas-liquid mixture flow are reduced. However, the inventor of the present invention found that when the impeller rotates, the air bubbles above the impeller usually remain behind the rotation direction of the blades and cling to the blades, and due to the centrifugal force, the air bubbles remain at the ends of the blades near the periphery of the impeller, so that although the above case guides the air bubbles, the guiding path is too long to effectively and rapidly guide the air bubbles downward.
Japanese patent No. 5707086 discloses a drainage pump, in which a plurality of flow path cavities (250) are provided on an impeller, and the flow path cavities are located between a main blade and an auxiliary blade and evenly distributed at the midpoint between the blades, and the flow path cavities mainly provide water to flow upward from below the impeller or allow water to flow downward from above the impeller so that water does not pass through a central through cavity (252). In this case, water naturally passes through these flow path holes by mainly utilizing the effect of water pressure balance, and the water pressure above and below the impeller is balanced. However, the flow path holes disclosed in this document can only provide a water pressure balancing effect and a good drainage effect for an environment containing oil in the air, but there is no technical description about the treatment of bubbles in water. Further, when the impeller rotates, if air bubbles are present in the water, the air bubbles are generally present behind the blades in the rotational direction and closely contact the blades, and therefore the flow path holes of this case cannot provide an effective discharge path for the air bubbles.
Disclosure of Invention
As can be seen from the above-mentioned prior art, the drainage impeller of the drainage pump in the prior art does not provide an effective bubble discharge mechanism, and therefore, the present invention provides a drainage impeller with balance holes, which is provided with a plurality of balance holes and can effectively discharge bubbles in water, so that the bubbles do not remain behind the blades, thereby greatly reducing noise and vibration.
In order to achieve the above-mentioned effects, the present invention provides a drainage impeller with balance holes, comprising: the top end of the shaft center is provided with a connecting groove used for being connected with a driving shaft to be driven to rotate, the shaft center radially and outwards extends a plurality of main blades in a vertical wall shape, and a virtual extending line is defined according to a virtual line formed by the outwards extending direction of each main blade; the annular bottom plate is arranged at the bottoms of the main blades and is separated from the axis by a preset distance, so that a plurality of hollow parts are formed among the axis, the main blades and the annular bottom plate; the bottom surface of the annular bottom plate undulates in a wave shape along the circumferential direction of the periphery of the annular bottom plate; the bottom edge of the annular wall is arranged at the outer edge of the annular bottom plate, the bottom edge of the annular wall fluctuates along with the fluctuation of the annular bottom plate, the top edge of the annular wall fluctuates in a wavy manner, the top edge is also high when the bottom edge of the annular wall is high, and the top edge is also low when the bottom edge is low; the annular bottom plate is provided with a plurality of balance holes which penetrate through the annular bottom plate up and down, the balance holes are close to the annular wall, and the distance between the hole edge and the annular wall is less than 1 mm; according to the rotation direction of the axle center and a plurality of main blades, each balancing hole is positioned below each main blade or behind the rotation direction of the virtual extension line of the main blade, is communicated with the space behind each main blade and is not positioned in front of the rotation direction of the virtual extension line of the main blade; when one balancing hole is positioned at the rear of one main blade, the distance between the hole edge of the balancing hole and the main blade is less than 1 mm.
Therefore, during actual operation, the air bubbles are not stored behind the blades and are discharged outwards through the balance holes, and the problems of noise and vibration possibly caused by the air bubbles are solved.
Drawings
Fig. 1 is a perspective view of a first preferred embodiment of the present invention.
FIG. 2 is a top view of the first preferred embodiment of the present invention.
Fig. 3 is a cross-sectional view taken along line 3-3 of fig. 2.
FIG. 4 is a diagram illustrating a state of use of the first preferred embodiment of the present invention.
FIG. 5 is a top view of a second preferred embodiment of the present invention.
Fig. 6 is a cross-sectional view taken along line 6-6 of fig. 5.
FIG. 7 is a top view of a third preferred embodiment of the present invention.
Fig. 8 is a cross-sectional view taken along line 8-8 of fig. 7.
FIG. 9 is a top view of another embodiment of the third preferred embodiment of the present invention.
FIG. 10 is a top view of the fourth preferred embodiment of the present invention.
Fig. 11 is a cross-sectional view taken along line 11-11 of fig. 10.
FIG. 12 is a top view of a fifth preferred embodiment of the present invention.
Fig. 13 is a cross-sectional view taken along section line 13-13 of fig. 12.
Fig. 14 is a top view of a sixth preferred embodiment of the present invention.
Fig. 15 is a cross-sectional view taken along section line 15-15 of fig. 14.
FIG. 16 is a perspective view similar to FIG. 9 of another embodiment of the present invention.
Fig. 17 is a right side view of fig. 16.
Wherein, the reference numbers:
10 drainage impeller with balance holes
11 axle center
111 connecting groove
12 main blade
15 annular bottom plate
151 balance hole
16 hollow part
17 annular wall
20 drainage impeller with balance holes
21 axle center
22 main blade
23 Secondary blade
25 annular bottom plate
251 balance hole
26 hollowed-out part
27 annular wall
30 drainage impeller with balance holes
31 axial center
32 main blade
33 Secondary blade
34 auxiliary blade
35 annular bottom plate
351 balance hole
36 hollow part
37 annular wall
32' main blade
33' Secondary blade
34' auxiliary blade
351' balance hole
40 drainage impeller with balancing holes
42 main blade
43 Secondary blade
44 auxiliary blade
451 balance hole
47 annular wall
50 drainage impeller with balance holes
52 main blade
53 Secondary blade
54 auxiliary blade
57 annular wall
60 drainage impeller with balancing holes
62 Main blade
621 gap
63 Secondary blade
631 secondary gap
64 auxiliary blade
65 annular bottom plate
651 balance hole
67 annular wall
70 water discharge impeller with balance holes
72 Main blade
73 Secondary blade
74 auxiliary blade
751 balance hole
77 annular wall
91 motor
92 drive shaft
95 water collecting tank
96 drainage outlet
Virtual extension line of VL
Detailed Description
To illustrate the technical features of the present invention in detail, the following preferred embodiments are described in conjunction with the drawings, in which:
as shown in fig. 1 to 3, a
the
The
The bottom edge of the
The
In the first embodiment, each
The structure of the first embodiment is explained above, and the operation state thereof is explained next.
As shown in fig. 4, in the present invention, the top end of the
Referring to fig. 5 to 6, a second preferred embodiment of a drainage impeller 20 with balancing holes is substantially similar to the first embodiment, except that:
the second embodiment further includes a plurality of
Each of the balance holes 251 is located below the plurality of main blades 22 and the plurality of
Further, the heights of the top edges of the plurality of main blades 22 and the plurality of
In the second embodiment, although the balancing holes 251 are not located behind the main blades 22 and the
The main blades 22 and the
Although the balancing holes 251 are located below the
The remaining structures and effects achieved by the second embodiment are similar to those of the first embodiment, and are not repeated.
Referring to fig. 7 to 8, a
the
Further, the heights of the top edges of the plurality of
In operation of the third embodiment, the plurality of
It should be noted that, as shown in fig. 9, the auxiliary blades 34 ' in the third embodiment may also be provided with balancing holes 351 ' only under the
The remaining structures and effects achieved by the third embodiment are similar to those of the second embodiment disclosed in the foregoing, and are not repeated.
As shown in fig. 10 to 11, a drainage impeller 40 with balancing holes according to a fourth preferred embodiment of the present invention is mainly similar to the third embodiment of the present disclosure, except that:
The
In the fourth embodiment, since each
The remaining structures and effects achieved by the fourth embodiment are substantially the same as those of the third embodiment, and are not repeated.
As shown in fig. 12 to 13, a drainage impeller 50 with balancing holes according to a fifth preferred embodiment of the present invention is mainly similar to the fourth embodiment of the present disclosure, except that:
each of the
The remaining structures and effects achieved by the fifth embodiment are similar to those of the fourth embodiment disclosed in the foregoing, and are not repeated.
Referring to fig. 14 to 15, a
the
In the drain impeller of the sixth embodiment, when in operation, the
The remaining structure and the effect achieved by the sixth embodiment are substantially the same as those of the fifth embodiment disclosed in the foregoing, and will not be described again.
In the six embodiments described above, the annular wall is undulated, but may be substantially horizontal. In fig. 16 and 17, the bottom edge of the annular wall 77 and the top edge of the annular wall 77 of the drain impeller 70 are substantially horizontal without undulation. Although this design cannot provide an auxiliary water-repelling effect to water due to the wavy shape, in actual operation, it is the main blades 72, the secondary blades 73 and the auxiliary blades 74 that mainly generate the water-repelling effect to water, but not the wavy structure, so the bottom edge of the annular wall 77 and the top edge of the annular wall 77 may be set to be substantially horizontal, which has a limited reduction in water-repelling effect, and still can discharge bubbles due to the arrangement of the balancing holes 751.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
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