U.S. patent application number 10/317805 was filed with the patent office on 2004-06-17 for water pump motor.
Invention is credited to Chen, Chi-Der.
Application Number | 20040115078 10/317805 |
Document ID | / |
Family ID | 32909787 |
Filed Date | 2004-06-17 |
United States Patent
Application |
20040115078 |
Kind Code |
A1 |
Chen, Chi-Der |
June 17, 2004 |
WATER PUMP MOTOR
Abstract
A water pump motor is constructed to include a housing, the
housing having a conical water guide chamber gradually expanding
from the top side toward the bottom side, water inlets around the
periphery for guiding water into the water guide chamber, and an
air passage for guiding air into the water guide chamber to mix
with water, a vane wheel fastened to a motor shaft inside the
housing and suspended in the water guide chamber, the vane wheel
having triangular vanes radially arranged at the top around the
motor shaft, a hollow water outlet pipe holder coupled to the
bottom shell to hold a water outlet pipe, the water outlet pipe
holder having radial dampers equiangularly spaced around the inside
wall to guide water toward the water outlet pipe.
Inventors: |
Chen, Chi-Der; (Taipei,
TW) |
Correspondence
Address: |
Keith Kline
PRO-TECHTOR INTERNATIONAL SERVICES
20775 Norada Court
Saratoga
CA
95070-3018
US
|
Family ID: |
32909787 |
Appl. No.: |
10/317805 |
Filed: |
December 11, 2002 |
Current U.S.
Class: |
417/424.1 |
Current CPC
Class: |
A01K 63/047 20130101;
F04D 31/00 20130101 |
Class at
Publication: |
417/424.1 |
International
Class: |
F04B 035/04 |
Claims
What the invention claimed is:
1. A water pump motor comprising: a housing, said housing
comprising an air inlet pipe, a downwardly extended bottom shell, a
conical water guide chamber defined within said bottom shell, said
conical water guide chamber having a diameter gradually increasing
from a top side of said bottom shell toward a bottom side of said
bottom shell, a plurality of water inlets through said bottom shell
in fluid communication with said water guide chamber, an inside air
passage axially provided in said bottom shell in communication
between said air inlet pipe and said water guide chamber, and an
outer thread extended around the periphery of said bottom shell; a
motor shaft provided inside said housing; a vane wheel fastened to
said motor shaft, said vane wheel having triangular vanes radially
arranged at a top side around said motor shaft; a hollow water
outlet pipe holder coupled to said bottom shell, said water outlet
pipe holder having radial dampers equiangularly spaced around an
inside wall thereof and an outer thread extended around the
periphery thereof; a water outlet pipe coupled to said water outlet
pipe holder for free rotation through 360.degree. and adapted to
guide water out of said water guide chamber; and an internally
threaded lock ring threaded onto the outer thread of said water
outlet pipe holder and the outer thread of said bottom shell of
said housing to secure said water outlet pipe to said water outlet
pipe holder, for enabling said water outlet pipe to be rotated on
said water outlet pipe holder through 360.degree..
2. The water pump motor as claimed in claim 1, wherein said vane
wheel has a conical bottom recess.
3. The water pump motor as claimed in claim 1 wherein said water
inlets are formed in one end of a respective water inlet pipe
provided at said bottom shell.
4. The water pump motor as claimed in claim 1 wherein said water
inlet pipe is connected with an air hose.
5. The water pump motor as claimed in claim 4 wherein said air hose
is installed with an air flow rate regulator.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a water pump motor for use
in an aquarium or the like and, more particularly to such a water
pump motor, which has water inlets provided above the water outlet
pipe so that water can efficiently pumped to the water outlet pipe,
a conical water guide chamber that concentrates intake water,
radial dampers that guide water from the conical water guide
chamber to the water outlet pipe, and an air passage with an air
inlet pipe for guiding outside fresh air into the water guide
chamber to mix with water flowing toward the water outlet pipe.
[0003] 2. Description of the Related Art
[0004] FIG. 1 illustrates a water pump motor used in an aquarium
according to the prior art. As illustrated, the water pump motor
comprises a housing 2, a downwardly extended water inlet pipe 21
provided at the bottom side of the housing 2, a water outlet pipe
22 transversely provided above the water inlet pipe 21, a water
guide chamber 23 defined inside the housing 2 in communication
between the water inlet pipe 21 and the water outlet pipe 22, and a
vane wheel 24 suspended in the water guide chamber 23 and connected
to the motor shaft (not shown) inside the housing 2. This design of
water pump motor is not efficient in use. Because the water outlet
pipe 22 is disposed above the water inlet pipe 21, much horsepower
is required to pump water from upwards from the water inlet pipe 21
to the water outlet pipe 22. Further, this structure of water pump
motor has no means to guide outside fresh air into the inside of
the housing 2 for mixing with water passing through the water guide
chamber 23.
SUMMARY OF THE INVENTION
[0005] The present invention has been accomplished to provide a
water pump motor, which eliminates the aforesaid drawbacks.
According to one aspect of the present invention, multiple water
inlets are provided around the periphery of the housing of water
pump motor near the top to guide water downwardly into the inside
of the housing in different directions toward a water outlet pipe
at the bottom side of the housing. According to another aspect of
the present invention, the housing of the water pump motor is
provided with an air passage and an air inlet pipe connected with
an air hose with an air flow rate regulator for guiding outside
fresh air into the inside of the housing to mix with water.
According to still another aspect of the present invention, the
vane wheel of the water pump motor has triangular vanes radially
arranged at the top side around the motor shaft, and the water
outlet pipe holder connecting the water outlet pipe to the housing
of the water pump motor has radial dampers equiangularly spaced
around the inside wall for guiding water from the water inlets
toward the water outlet pipe efficiently.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] FIG. 1 is a schematic sectional view of a water pump motor
according to the prior art, showing the water flowing
direction.
[0007] FIG. 2 is a perspective exploded view of a water pump motor
according to the present invention.
[0008] FIG. 3 is another exploded view of the water pump motor
according to the present invention.
[0009] FIG. 4 is a schematic sectional view of the present
invention, showing the water flowing direction.
[0010] FIG. 5 is an elevational view of the water pump motor
according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0011] Referring to FIGS. 2 and 3, a water pump motor is adapted
for use in an aquarium, comprising a housing 1, a motor shaft 1A, a
vane wheel 12, a water outlet pipe holder 13, a lock ring 14, and a
water outlet pipe 15.
[0012] The housing 1 comprises an air inlet pipe 10, a downwardly
extended bottom shell 11, a conical water guide chamber 112 defined
within the bottom shell 11, a plurality of water inlets 111 through
the bottom shell 11 in fluid communication with the water guide
chamber 112 an inside air passage 113 axially provided in the
bottom shell 11 in communication between the air inlet pipe 10 and
the water guide chamber 112, and an outer thread 114 extended
around the periphery of the bottom end of the bottom shell 11.
[0013] The vane wheel 12 is fastened to the motor shaft 1A provided
inside the housing 1, having triangular vanes 121 radially arranged
at the top side around the motor shaft 1A and a conical bottom
recess 122 for easy removal from the injection-molding mold.
[0014] The water outlet pipe holder 13 is a hollow member coupled
to the bottom side of the bottom shell 11 of the housing 1, having
radial dampers 131 equiangularly spaced around the inside wall and
an outer thread 132 extended around the periphery.
[0015] The lock ring 14 has an inner thread 141 threaded onto the
outer thread 132 of the water outlet pipe holder 13 and the outer
thread 114 of the bottom shell 11 of the housing 1 to secure the
water outlet pipe 15 to the water outlet pipe holder 13, enabling
the water outlet pipe 15 to be rotated on the water outlet pipe
holder 13 through 360.degree..
[0016] Referring to FIG. 4, an air hose (not shown) is connected to
the air inlet pipe 10 of the housing 1 and extended to the outside
of the aquarium. An air flow rate regulator may be installed in
between the air inlet pipe 10 and the air hose to control the flow
rate of air. When the vane wheel 1 rotated with the motor shaft 1A,
water evenly flows through the water inlet holes 111 in different
angles within 360.degree. into the water guide chamber 112, and
guided by the triangular vanes 121 of the vane wheel 12 and the
dampers 131 of the water outlet pipe holder 13 toward the water
outlet pipe 15, which guides water to the aquarium or filter
trough. At the same time, outside air passes through the air hose
and the air inlet pipe 10 to the water guide chamber 112 via the
inside air passage 113 to mix with water flowing toward the water
outlet pipe 15.
[0017] Because the water guide chamber 112 is a conical chamber,
having a diameter gradually increasing in vertical direction from
the water inlets 111 toward the water outlet pipe 15, water is
efficiently guided to the water outlet pipe 15 with less horsepower
of the water pump motor. The triangular vanes 121 of the vane wheel
12 and the dampers 131 of the water outlet pipe holder 13
concentrate the flowing of water toward the water outlet pipe 15,
enhancing the water pumping action of the water pump motor.
[0018] A prototype of water pump motor has been constructed with
the features of FIGS. 2.about.5. The water pump motor functions
smoothly to provide all of the features discussed earlier.
[0019] Although a particular embodiment of the invention has been
described in detail for purposes of illustration, various
modifications and enhancements may be made without departing from
the spirit and scope of the invention. Accordingly, the invention
is not to be limited except as by the appended claims. For example,
water inlet pipes may be provided in the bottom shell 11 of the
housing 1 instead of the water inlets 111.
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