Drain impeller

Abstract

A drainage impeller comprises: an annular concave disk having a disk body and an annular wall, the annular wall protruding upward from the periphery of the disk body; a core shaft passing through the disk body and forming a flow channel between the two, the top end of the core shaft is located above the disk body and is used to connect to the driving shaft of a motor, and the bottom end of the core shaft is located below the disk body; the characteristic is that the core shaft located below the disk body is a polygonal cylinder, the polygonal cylinder has a plurality of planes, the plurality of planes are connected in pairs and chamfered at the connection to form a narrow and long surface, and each of the support ribs below the disk body is connected to each of the planes and each of the narrow and long surfaces.

Description

Technical Field

[0001] The invention relates to a drainage device, in particular to a drainage impeller. Background Art

[0002] The drainage motor used in air conditioners produces noise, partly due to the resistance generated by the impeller hitting the bubbles entrained in the condensed water, causing vibration, or the noise caused by the bubbles bursting due to the impact. Therefore, if the impact force of the impeller on the bubbles when pumping water can be reduced, the noise can be effectively reduced.

[0003] Please refer to Taiwan Patent No. I405907, which is about a drainage pump having an opening disposed at the lower end of the aforementioned pump chamber and a discharge port disposed at the side of the aforementioned pump chamber; the rotary blade in the case has a small diameter blade, and the small diameter blade has a columnar shaft portion, and a plurality of blade portions protruding from the shaft portion in a radial direction, and the bottom of the aforementioned small diameter blade is formed to be orthogonal to the axis of the aforementioned shaft portion, and is located above the end surface relative to the aforementioned opening by only a predetermined dimension, and the projection area of ​​the bottom of the aforementioned small diameter blade on the end surface of the aforementioned opening is set to a range of 60% to 70% relative to the inner diameter area of ​​the aforementioned opening. This can achieve the goal of suppressing the amount of condensed water suction and reducing the noise generated during use. Summary of the invention

[0004] The main purpose of the present invention is to provide a drainage impeller, which can increase the efficiency of water displacement and reduce the generation of bubbles at the same time.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a drainage impeller, comprising: an annular concave disk, having a disk body and an annular wall, the annular wall protruding upward from the circumference of the disk body; a core shaft passing through the disk body and forming a flow channel therebetween, the top end of the core shaft being located above the disk body and used to connect to a driving shaft of a motor, and the bottom end of the core shaft being located below the disk body, the core shaft located above the flow channel radially extending a plurality of supporting ribs outward, the bottoms of the plurality of supporting ribs being connected to the disk body, and the plurality of supporting ribs partially exposed through the flow channel below the disk body and connected to the core shaft, the outer ends of the plurality of supporting ribs being connected to the inner wall of the annular wall; characterized in that: the core shaft located below the disk body is a polygonal column, the polygonal column having a plurality of planes, the plurality of planes being connected in pairs and chamfered at the connection to form a narrow and long surface, and each of the supporting ribs below the disk body being connected to each of the planes and each of the narrow and long surfaces.

[0006] Thereby, the drainage impeller of the present invention can achieve the effect of increasing the water displacement efficiency through each of the planes of the polygonal column, and the arrangement of each of the narrow and long surfaces can achieve the effect of reducing the generation of bubbles.

[0007] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A perspective view of a first embodiment of the present invention;

[0009] Figure 2 A three-dimensional diagram from another perspective of the first embodiment of the present invention;

[0010] Figure 3 A partial side view of a first embodiment of the present invention;

[0011] Figure 4 A bottom view of the first embodiment of the present invention, and Figure 4A Variations of polygonal base columns;

[0012] Figure 5 A schematic diagram of the use state of the first embodiment of the present invention;

[0013] Figure 6 A three-dimensional diagram from the bottom perspective of the second embodiment of the present invention.

[0014] Among them, the reference numerals

[0015] 10 Drain impeller

[0016] 11 annular concave disc 13 disc body 15 ring wall

[0017] 21 core shaft 23 flow channel 25 support rib

[0018] 27 Polygonal cylinder 28 Plane 29 Narrow surface

[0019] 97 Drain 98 Sump 99 Drive shaft

[0020] 100 Drainage motor

[0021] 10' Drain impeller 13' Plate 25' Support rib

[0022] 27' polygonal cylinder 28' plane 29' narrow surface DETAILED DESCRIPTION

[0023] In order to explain the technical features of the present invention in detail, the following embodiments are given with reference to the accompanying drawings, wherein:

[0024] like Figures 1 to 4 As shown, a drainage impeller 10 provided in the first embodiment of the present invention is mainly composed of an annular concave disk 11 and a core shaft 21, wherein:

[0025] The annular recessed disk 11 has a disk body 13 and an annular wall 15 . The annular wall 15 is protruded upward from the periphery of the disk body 13 .

[0026] The core shaft 21 passes through the disk body 13 and forms a flow channel 23 between the two 21, 13. The top end of the core shaft 21 is located above the disk body 13 and is used to connect to a drive shaft 99 of a motor, and the bottom end of the core shaft 21 is located below the disk body 13. The core shaft 21 located above the flow channel 23 radially extends a plurality of support ribs 25 outward, and the bottoms of the plurality of support ribs 25 are connected to the disk body 13, and some of the plurality of support ribs 25 are exposed below the disk body 13 through the flow channel 23 and connected to the core shaft 21, and the outer ends of the plurality of support ribs 25 are connected to the inner wall of the ring wall 15.

[0027] The present invention is characterized in that the core shaft 21 located below the disk 13 is a polygonal column 27. In the first embodiment, the polygonal column 27 is a regular polygonal column, and a triangular column is used as an example. The polygonal column 27 has a plurality of planes 28, and the plurality of planes 28 are connected in pairs and chamfered at the connection to form a narrow long surface 29. The support ribs 25 below the disk 13 are connected to the planes 28 and the narrow long surfaces 29. The structure of the plurality of planes 28 enables the present invention to have the function of water repelling, and the narrow long surfaces 29 make it difficult for the present invention to generate bubbles when rotating.

[0028] In addition, in the first embodiment, the bottom of each support rib 25 connected to each plane 28 is at a predetermined distance from the bottom edge of the polygonal column 27; and each support rib 25 connected to each narrow and long surface 29 continuously extends to the bottom edge of the polygonal column 27. Figure 3 As shown, by using this structure, the thickness of each supporting rib 25 of each narrow and long surface 29 can be utilized to increase the contact area between each plane 28 and condensate, thereby increasing the water-repelling efficiency, thereby avoiding the problem of insufficient contact area with condensate and reduced water-repelling efficiency when the present invention is installed in a larger space. However, it depends on the size of the space to be used to determine whether it is suitable to set the polygonal column 27 in this shape. If the multiple supporting ribs 25 are not set in this shape, and the water-repelling efficiency achieved is sufficient, there is no need to set it in this shape. Therefore, the connection position of each supporting rib 25 connected to each plane 28 and each narrow and long surface 29 described herein is not a necessary limitation.

[0029] When each of the supporting ribs 25 is configured as described above, Figure 3 , Figure 4As shown, the surface of each supporting rib 25 of each narrow and long surface 29 extending to the bottom edge of the polygonal column 27 is an arc surface; and the top surface of the cross-sectional shape of each supporting rib 25 extending from each narrow and long surface 29 is a plane; thereby, the collision force between the polygonal column 27 and the water flow during rotation can be reduced, thereby reducing the possibility of generating bubbles.

[0030] The structure of the first embodiment of the present invention has been described above. Next, the use of the first embodiment will be described.

[0031] See also Figures 1 to 5 As shown, the drainage impeller 10 of the present invention is arranged in a drainage motor 100 when in use, the top end of the core shaft 21 is connected to the driving shaft 99 of the motor, and the drainage impeller 10 is located in a water collecting tank 98. When the drainage motor drives the drainage impeller 10 to operate, in addition to the multiple supporting ribs 25 that will drive the condensed water in the water collecting tank 98 and form a vortex, the polygonal column 27 has multiple planes 28 and can also provide a pushing force for the condensed water, thereby increasing the efficiency of water displacement. At the same time, through the structure of the multiple narrow and long surfaces 29, when the vortex is formed, the water flow resistance formed by the condensed water is small, so it is not easy to generate bubbles. Finally, the condensed water in the water collecting tank 98 will be discharged from a drain port 97 along with the vortex, completing the drainage function.

[0032] Therefore, it can be known from the above that the present invention can achieve the effect of increasing the water repelling efficiency by disposing each of the planes 28 of the polygonal column 27, and the disposing each of the narrow and long surfaces 29 can achieve the effect of reducing the generation of bubbles.

[0033] However, in addition to the above structure, see Figure 4A As shown, the top surface of the cross-sectional shape of each support rib 25 extending on each narrow surface 29 can also be in an arc shape; it also has the effect of reducing the generation of bubbles. When each support rib 25 extending on each narrow surface 29 is in this structural form, the center position of the top surface of the cross-sectional shape of each support rib 25 on each narrow surface 29 is the same as the axis position of the polygonal column 27; or they can be different.

[0034] Next, please refer to Figure 6 The second embodiment of the present invention provides a drainage impeller 10' which is similar to the first embodiment, except that:

[0035] Each of the supporting ribs 25' connected to each of the planes 28' continues to extend to the bottom edge of the polygonal column 27'; each of the supporting ribs 25' connected to the narrow face 29' continues to extend to the bottom edge of the polygonal column 27', and the width of the multiple supporting ribs 25' of each of the planes 28' decreases from wide to narrow and the height decreases from high to low from top to bottom. The structure of each of the supporting ribs 25' of each of the planes 28' has a buffering effect on the collision force of the multiple planes 28' on the condensed water when water is dispelled, thereby reducing the possibility of bubble generation.

[0036] The rest of the structure and the effects that can be achieved in the second embodiment are similar to those of the first embodiment, and will not be described in detail again.

[0037] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A drainage impeller, comprising: An annular concave disk having a disk body and an annular wall, the annular wall protruding upward from the periphery of the disk body; A core shaft passes through the disc body and forms a flow channel therebetween, the top end of the core shaft is located above the disc body and is used to connect to a drive shaft of a motor, and the bottom end of the core shaft is located below the disc body, the core shaft located above the flow channel radially extends a plurality of support ribs outward, the bottoms of the plurality of support ribs are connected to the disc body, and the plurality of support ribs are partially exposed below the disc body through the flow channel and connected to the core shaft, and the outer ends of the plurality of support ribs are connected to the inner wall of the ring wall; Features: The core shaft located below the disk is a polygonal column having a plurality of planes, which are connected in pairs and chamfered at the connection to form a narrow and long surface. The supporting ribs below the disk are either connected to the plane or to the narrow and long surface.

2. The drainage impeller according to claim 1, characterized in that: The bottom of each of the support ribs connected to each of the planes is at a predetermined distance from the bottom edge of the polygonal column; and each of the support ribs connected to each of the narrow and long faces continuously extends to the bottom edge of the polygonal column.

3. The drainage impeller according to claim 2, characterized in that: The surface of each supporting rib of each narrow and long surface extending to the bottom edge of the polygonal column is a curved surface.

4. The drainage impeller according to claim 3, characterized in that: The top surface of the cross-section of each of the supporting ribs extending from each of the narrow and long surfaces is in a plane shape.

5. The drainage impeller according to claim 3, characterized in that: The top surface of the cross-section of each of the supporting ribs extending from each of the narrow and long surfaces is in an arc shape.

6. The drainage impeller according to claim 5, characterized in that: The center position of the circle corresponding to the top surface of the cross-sectional shape of each supporting rib of each narrow and long surface is the same as the axis position of the polygonal column.

7. The drainage impeller according to claim 5, characterized in that: The center position of the circle corresponding to the top surface of the cross-sectional shape of each supporting rib of each narrow and long surface is different from the axis position of the polygonal column.

8. The drainage impeller according to claim 1, characterized in that: Each of the support ribs connected to each of the planes continues to extend to the bottom edge of the polygonal column; each of the support ribs connected to the narrow and long surface continues to extend to the bottom edge of the polygonal column.

9. The drainage impeller according to claim 8, characterized in that: The width of the plurality of support ribs on each plane decreases from wide to narrow and the height decreases from high to low from top to bottom.

10. The drainage impeller according to claim 1, characterized in that: The polygonal cylinder is a regular polygonal cylinder.

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