Spiral fluted wheel for a water pump

Details Spiral fluted wheel for a water pump Spiral fluted wheel for a water pump

2001-07-25

2003-01-07

Lopez, F. Daniel (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Radially extending web or end plate

C416S22300B

Reexamination Certificate

active

06503057

ABSTRACT:

2
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a spiral fluted wheel for a water pump, and more particularly to a spiral fluted wheel that can be produced rapidly and precisely.
2. Description of Related Art
Referring to
FIGS. 3
, and
4
, a water pump with a conventional multiple vane case comprises a shell (
50
), multiple vane cases (
51
), multiple guide cases (
52
), a filter (
53
), a motor (
54
) with an electricity supply wire (
55
), and a water outlet pipe (
56
). The water pump is typically received in a well to draw water therefrom.
The shell (
50
) contains the multiple vane cases (
51
) and the multiple guide cases (
52
) in alternative with each other inside and the filter (
53
) is mounted under the shell (
50
) to filtrate water by its meshes. The motor (
54
) is secured under the filter (
53
) and has an axle tube (
540
) penetrating the multiple vane cases (
51
) and the multiple guide cases (
52
) and driving all cases (
51
,
52
) to rotate. The water pipe (
56
) is communicated with the shell (
50
) to pump water out of the well.
In
FIG. 4
, the multiple guide cases (
52
) each has a plurality of guide waterways (
520
) defined therein. The guide waterways (
520
) communicate with two vane cases (
51
) adjacent to the guide case (
52
).
The detail structure of the vane case (
51
) is shown particularly in
FIGS. 5 and 6
. The vane case (
51
) is composed of an upper plate (
510
), a lower plate (
512
) respectively combined with the upper plate (
510
), and each combined pair of upper and lower plates (
510
,
512
) has a plurality of vane segments (
60
) sandwiched therebetween.
The upper plate (
510
) is a round plate having a hole (
5101
) defined in the center. The axle tube (
540
) (see
FIG. 3
) penetrates and drivingly engages each upper plate (
510
) via mating with the hole (
5101
) of the upper plate (
510
). The lower plate (
512
) is a round plate corresponding to the upper plate (
510
) and an aperture (not shown) is defined in the center of the lower plate (
512
). The aperture has a larger diameter than a maximum diameter of the axle tube (
540
) to allow water to flow into the vane segments (
60
). The plurality of vane segments (
60
) has an inner wing (
62
) and an outer wing (
64
) extending outwardly and laterally from a respective side of the vane segment (
60
). The inner wing (
62
) is mated with the outer wing (
64
) of an adjacent segment. Each wing has two positioning holes (
66
) respectively defined in two ends thereof.
In assembly, multiple vane segments (
60
) are gathered to form a round combination and sandwiched between the upper plate (
510
) and the lower plate (
512
). The round combination is combined to both the upper and lower plates (
510
,
512
) at the positioning holes (
66
).
Now referring to
FIG. 4
again, when the motor operates, the axle tube (
540
) drives the multiple vane cases (
51
) to rotate to cause a centrifugal force to water therein. Therefore, the water inside the vane cases (
51
) starts to be expelled by the centrifugal force and the water outside the vane cases (
51
) is filtrated by the filter (
54
) and attracted into the multiple vane cases (
51
) via the aperture of the lower plate (
512
). The rotating multiple vane cases (
51
) cause a centrifugal force to the water so as to make the water travel spirally along the channels made of the vane segments (
60
) and be expelled from the vane cases (
51
).
When the water is expelled from the vane cases (
51
), the guide waterways (
520
) of the guide cases (
52
) receive the expelled water and spirally guide the water up to another of the upper vane cases (
51
). Therefore, the water is pumped up gradually to reach the water pipe (
35
) when the axle tube (
330
) rotates fast enough, and then the water is pumped from the well.
However, two drawbacks exist in this conventional water pump which are that a punching process is needed to form the positioning holes (
66
) and this causes extra work to produce the vane case (
51
). Additionally, fixing the vane segment (
60
) on the upper plate (
510
) and the lower plate (
512
) by the position holes (
66
) one by one is troublesome due to the necessary alignment of the corresponding holes of both plates (
510
,
512
).
In order to make the water pump endurable and have more efficiency, the present invention has arisen to mitigate and/or obviate the disadvantages of the conventional vane cases.
SUMMARY OF THF INVENTION
The main objective of the present invention is to provide a spiral fluted wheel for a water pump that can be combined rapidly and precisely.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.


REFERENCES:
patent: 4923367 (1990-05-01), Zimmer

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