U.S. patent application number 13/943592 was filed with the patent office on 2014-02-20 for combined electronic water and oil pump.
This patent application is currently assigned to MAGNA POWERTRAIN OF AMERICA, INC.. The applicant listed for this patent is Richard Muizelaar, Liping Wang. Invention is credited to Richard Muizelaar, Liping Wang.
Application Number | 20140050602 13/943592 |
Document ID | / |
Family ID | 48901183 |
Filed Date | 2014-02-20 |
United States Patent
Application |
20140050602 |
Kind Code |
A1 |
Muizelaar; Richard ; et
al. |
February 20, 2014 |
COMBINED ELECTRONIC WATER AND OIL PUMP
Abstract
A combination pump comprising: a water pump having: a rotor
including a stationary shaft, a stator, and an. isolation jacket,
an oil pump having: a rotor that surrounds the isolation jacket of
the water pump, an eccentric shaft attached to the rotor, a rotary
pump in communication with the eccentric shall so that as the
eccentric rotates the rotary pump is rotated and pumps a fluid;
wherein the water pump rotor and the oil pump rotor are driven by a
common magnet.
Inventors: |
Muizelaar; Richard;
(Mississauga, CA) ; Wang; Liping; (Richmond Hill,
CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Muizelaar; Richard
Wang; Liping |
Mississauga
Richmond Hill |
|
CA
CA |
|
|
Assignee: |
MAGNA POWERTRAIN OF AMERICA,
INC.
Troy
MI
|
Family ID: |
48901183 |
Appl. No.: |
13/943592 |
Filed: |
July 16, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61672187 |
Jul 16, 2012 |
|
|
|
Current U.S.
Class: |
417/410.1 |
Current CPC
Class: |
F04D 25/163 20130101;
F01P 2005/125 20130101; F01M 2001/0238 20130101; F01M 2001/0215
20130101; F01P 5/12 20130101 |
Class at
Publication: |
417/410.1 |
International
Class: |
F04D 25/16 20060101
F04D025/16 |
Claims
1. A combination pump comprising: a water pump side having an inlet
and an outlet; a water pump chamber of the water pump side
connected between the inlet and outlet of the water pump side; a
pump element within the water pump chamber of the water pump side
for pumping fluid through the water pump chamber between the inlet
and the outlet of the water pump side; a rotor connected to the
pumping element on the water pump side; an oil pump side having an
inlet and an outlet of the oil pump side; an oil pump chamber on
the oil pump side connected between the inlet and outlet of the oil
pump side; a pump element within the oil pump chamber of the oil
pump side for pumping fluid through the oil pump chamber between
the inlet and the outlet; an eccentric shaft that partially
surrounds the rotor of the water pump side and connects to the pump
element of the oil pump side; and a stator having at least magnetic
coil that surrounds a portion of the rotor of the water pump side
and a portion of the eccentric shaft, wherein the stator
selectively generates a magnetic field that causes rotation of the
eccentric shaft of the oil pump, wherein the rotation is
transferred to the rotor of the water pump.
2. The combination pump of claim 1 further comprising an isolation
jacket separating the water pump side from the oil pump side.
3. The combination pump of claim 1 further comprising an electronic
controller within the oil pump side for controlling the operation
of the stator and the rotation of the rotor of the water pump and
the eccentric shaft of the oil pump.
4. The combination pump of claim 1 wherein the pumping element on
the water pump side is an impeller connected to the rotor of the
water pump side and the rotor on the water pump side rotates about
a stationary shaft.
5. The combination pump of claim 1 wherein the pump element of the
oil pump side is a gerotor having an outer rotor and an inner rotor
that rotates within the outer rotor and said inner rotor is
connected to and driven by the eccentric shaft.
6. A combination pump comprising: a unitary pump housing; a water
pump side within the unitary pump housing having an inlet and an
outlet of the water pump side formed in the unitary pump housing; a
water pump chamber of the water pump connected between the inlet
and the outlet of the water pump side; a pump element within the
pump chamber of the water pump side for pumping fluid through the
pump chamber between the inlet and the outlet of the water pump
side; a rotor connected to the pumping element of the water pump
side; an oil pump side within the unitary pump housing having an
inlet and an outlet of the oil pump side; an oil pump chamber of
the oil pump side connected between the inlet and the outlet of the
oil pump side; a pump element within the oil pump chamber of the
oil pump side for pumping fluid through the oil pump chamber
between the inlet and the outlet formed in the unitary pump
housing; an eccentric shaft connected to the pump element of the
oil pump side; at first stator contained in the unitary pump
housing having at least one magnetic coil surrounding a portion of
the rotor of the water pump side, wherein the first stator
selective generates a magnetic field that drives the rotation of
the rotor of the water pump; and a second stator having at least
one magnetic coil surrounding a portion of the eccentric shaft of
the oil pump side wherein the second stator selectively generates a
magnetic field that drives the rotation of the eccentric shaft and
the pumping of oil through the oil pump side.
7. The combination pump of claim 6 further comprising an isolation
jacket extending across the unitary pump housing for separating the
pump chamber from the oil pump side.
8. The combination pump of claim 7 wherein the first stator and
second stator are located in the oil pump side.
9. The combination pump of claim 6 further comprising a single
controller contained within the unitary pump housing and connected
to both the first stator and second stator for selectively
controlling the generation of the magnetic field of the first
stator and the magnetic field of the second stator independently of
each other.
10. The combination pump of claim 9 wherein the first stator, the
second stator and the single controller are located in the oil pump
side.
11. The combination pump controller of claim 6 wherein the pumping
element of the water pump side is an impeller connected to the
rotor and the rotor is rotatably positioned on a stationary
shaft.
12. The combination pump controller of claim 6 wherein the pump
element of the oil pump side is a gerotor having an inner rotor
connected to the eccentric shaft rotatably positioned within an
outer rotor.
13. A combination pump comprising: a unitary pump housing; a water
pump side within the unitary pump housing having an inlet and an
outlet formed in the unitary pump housing; a water pump chamber of
the water pump side connected between the inlet and the outlet of
the water pump side; an impeller within the water pump chamber of
the water pump side for pumping fluid through the water pump
chamber between the inlet and the outlet; a rotor connected to the
impeller of the water pump side, wherein the rotor is rotatably
mounted to a stationary shaft; an oil pump side within the unitary
pump housing having an inlet and an outlet formed in the unitary
pump housing; a oil pump chamber of the oil pump side connected
between the inlet and the outlet of the oil pump side; a gerotor
within the oil pump chamber of the oil pump side for pumping fluid
through the oil pump chamber between the inlet and the outlet
formed in the unitary pump housing; an eccentric shaft that
partially surrounds the water pump chamber of the water pump side
and connects to the gerotor of the oil pump side; and a single
stator having at least one magnetic coil that surrounds a portion
of the rotor of the water pump side and a portion of the eccentric
shaft, wherein the stator selectively generates a magnetic field
that drives both the eccentric shaft and the rotor of the water
pump side.
14. The controller of claim 13 further comprising a single
controller within the unitary pump housing of the oil pump side for
controlling the operation of the stator.
15. The combination pump of claim 14 wherein the stator and the
single controller are located in the oil pump side.
16. The combination pump of claim 15 further comprising an
isolation jacket extending across the unitary pump housing for
separating the pump chamber of the water pump side from the oil
pump side, wherein the stator partially surrounds a portion of the
isolation jacket where a portion of the rotor of the water pump
side is located.
17. The combination pump of claim 13 wherein the gerotor further
includes an outer rotor and an inner rotor rotatably positioned
within the outer rotor, wherein the eccentric shaft is connected to
and rotates the inner rotor.
18. The combination pump of claim 13, further comprising an
isolation jacket extending across the unitary pump housing for
separating the pump chamber of the water pump side from the oil
pump side.
19. The combination pump of claim 18 further comprising a volute
forming part of the pump chamber of the water pump side.
20. The combination pump of claim 13 further comprising a volute
forming part of the pump chamber of the water pump side.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional
Application No. 61/672,187, filed Jul. 16, 2012.
FIELD OF THE INVENTION
[0002] The present invention relates generally to an oil pump and a
water pump for use with an engine such as an automotive vehicle.
More particularly, the present disclosure relates to a combination
oil pump and water pump in a single unit.
BACKGROUND OF THE INVENTION
[0003] In general, the use of a water pump and an oil pump are well
known in vehicles. It is generally understood to use a water pump
to circulate water through a cooling system in the vehicle. It is
also generally well known to use an oil pump to circulate oil
through the transmission and engine. Traditionally, these systems
have always been kept separate.
[0004] Despite many varied attempts, the traditional water pump and
oil pump applications have significant drawbacks. There is a need
to improve on the traditional water pumping oil pump devices and
systems.
SUMMARY OF THE INVENTION
[0005] In one exemplary embodiment, there is disclosed a
combination pump having a water pump side having an inlet and an
outlet. A water pump chamber is contained within the water pump
side and connects between the inlet and outlet of the water pump
side. The water pump chamber has within it a pump element connected
to a rotor for pumping fluid through the water pump chamber between
the inlet and the outlet of the water pump side.
[0006] The combination pump also has an oil pump side having an
inlet and outlet with an oil pump chamber connected between the
inlet and outlet. A pump element is positioned within the oil pump
chamber of the oil pump side and pumps fluid through the oil pump
chamber between the inlet and outlet. An eccentric shaft partially
surrounds the rotor of the water pump side at one end and connects
to the pump element at a second end. A stator of the combination
pump has at least one isolated coupler magnet that surrounds a
portion of the rotor of the water pump side and a portion of the
eccentric shaft. The stator selectively generates a magnetic field
that causes rotation of both the eccentric shaft of the oil pump
and the rotor of the water pump.
[0007] Further areas of applicability of the present invention will
become apparent from the detailed description provided hereinafter.
It should be understood that the detailed description and specific
examples, while indicating the preferred embodiment of the
invention, are intended for purposes of illustration only and are
not intended to limit the scope of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The present invention will become more fully understood from
the detailed description and the accompanying drawings,
wherein:
[0009] FIG. 1 is a perspective of the pump of the teachings
herein;
[0010] FIG. 2 is a cross-sectional of the combination pump in
accordance with one embodiment of the invention;
[0011] FIG. 3 is a partial cross-sectional, view of a top half of
one embodiment of a pump of the teachings herein;
[0012] FIG. 4 is a partial cross-sectional view of the bottom half
of the pump of FIG. 3;
[0013] FIG. 5 illustrates an exploded view of the pump taught
herein;
[0014] FIG. 6 illustrates an exploded view of another embodiment of
the pump taught herein;
[0015] FIG. 7 illustrates table 1 and table 2 providing pumping
efficiency;
[0016] FIG. 8 illustrates flow rates of the pumps at specific heads
and revolutions per minute of each pump; and
[0017] FIG. 9 is a cross-sectional side view of an alternate
embodiment of the combination pump having a single controller that
independently controls the water pump side and the oil pump
side.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0018] The following description of the preferred embodiment(s) is
merely exemplary in nature and is in no way intended to limit the
invention, its application, or uses.
[0019] The combination pump of the teachings herein includes a
water pump side and an oil pump side. The oil pump side and the
water pump side of the teachings herein are driven by a common
motor. Generally, the water pump side includes a rotor and a
stator. The rotor and the stator are separated by a isolation
jacket. The rotor includes a shaft that is stationary and the rotor
rotates around the shaft via one or more bearings so that the
impeller is rotated and a fluid is moved. Additional aspects of the
water pump side pump can be gleaned from the teachings herein,
including those of paragraphs 0013 through 0032 and FIGS. 1 through
6 of Provisional application Ser. No. 61/672,044, filed on. Jul.
16, 2012 showing various components of the water pump and the
interrelationship of the components of the water pump.
[0020] The oil pump side includes a shaft extending through the oil
pump side. The shaft may be a straight shaft. Preferably, the shaft
is an eccentric shaft that rotates around an axis of rotation and
drives a rotary pump.
[0021] The rotor on the oil pump side and the rotor on the water
pump side may rotate in opposing directions. Preferably the rotor
on the oil pump side and the rotor on the water pump side rotate in
the same direction so that fluids are pumped.
[0022] FIG. 1 illustrates a combination pump 2 having a unitary
pump housing 4. The pump includes a water pump side 10 and an oil
pump side 100.
[0023] Referring now to all the Figures generally and with
particular reference to FIGS. 2 and 3. The combination pump 2 on
the water pump side 10 includes a volute 12 having an inlet 14 and
an outlet 16. The volute 12 connect to the unitary pump housing,
which contains a motor 20 that drives the water pump side 10 and
oil pump side 100. The water pump side 10 further includes a pump
chamber 21 defined by a space between the volute 12 and a wet
sleeve or isolation jacket 32 connected across the unitary housing
4. The pump chamber 21 connects between the inlet 14 and outlet 16
of the water pump side 10. Within the pump chamber 21 is having a
pump element 22 connected to a rotor 24 that rotates about a
stationary shaft 28. The pump element 22 can be any suitable pump
element, such as an impeller, vane pump, hydraulic pistons or any
other suitable pump element used for pumping fluid, such as water
or coolant, through the pump chamber 21. In the present embodiments
of the invention shown in FIGS. 1-8 the pump element 22 is an
impeller.
[0024] The combination pump 2 on the oil pump side 100 contained
with the unitary pump housing 4. The oil pump side 100 includes an
oil pump chamber 101 with the unitary pump housing 4 connected
between an inlet 102 and outlet 103. A pump element 110 is rotates
within the pump chamber 101 and pump oil between the inlet 102 and
outlet 103 of the oil pump side 100. The pump element 110 can be
any type of suitable oil pump element, such as but not limited to a
vane pump, gerotor, hydraulic piston cylinder or any other suitable
pump element. In the present embodiment of the invention shown in
the Figures, the pump element 110 is a gerotor pump having an inner
rotor 112, which is star shaped and having vanes 114. The inner
rotor 112 is positioned within an outer rotor 116 and rotates
within outer rotor 116 to pump oil through the pump chamber 101
between the inlet 102 and outlet 103.
[0025] Located within the unitary pump housing 4, on the oil pump
side 100 the motor 20 includes a stator 26 with at least one
electromagnetic coil 30 that partially circumscribe a portion of
the isolation jacket 32 and partially circumscribe a portion of the
rotor 24 of the water pump side 10. The rotor 24 is partially
circumscribed by the stator 26 and separated from the stator 26 by
the isolation jacket 32. The isolation jacket 32 prevents fluid
from contacting the stator 26. The stator 26 and electromagnetic
coil 30 also partially circumscribe the open cylinder 133 of an
eccentric shaft 130 that is connected at one end to the inner rotor
112 on the oil pump side 100. The open cylinder 133 has motor
magnets 36 connected to the outside surface of the open cylinder
133, adjacent the electromagnetic coil 30. When the electromagnetic
coil 30 is energized, the magnetic field created acts on the motor
magnets 36, which causes the eccentric shaft 130 to rotate. The
rotation of the eccentric shaft 130 also rotates the inner rotor
112 of the pump element 110 of the oil pump side 100.
[0026] On an interior surface 135 of the open cylinder 133 is at
least one eccentric shaft coupler magnet 34 that is in magnetic
with at least one rotor coupler magnet 33 connected to the outside
surface of the rotor 24 of the water pump side 10. The isolation
jacket 32 separates the eccentric shaft coupler magnet 34 and the
rotor coupler magnet 33; however, the eccentric shaft coupler
magnet 34 and the rotor coupler magnet 33 are still attracted to
each other through the isolation jacket 32.
[0027] The operation of the combination pump 2 in accordance with
the present invention will now be described. When the at least one
magnetic coil 30 of the stator 26 is energized a magnetic filed is
generated between the motor magnets 36 and the magnetic coil 30,
which causes the eccentric shaft 130 to rotate. This in turn causes
the pump element 110 to pump oil through the oil pump side 100.
Rotation of the eccentric shaft 130 causes the eccentric shaft
coupler magnet 34 to rotate, which acts one the rotor coupler
magnet 33 to cause the rotor 24 on the water pump side 10 to rotate
and pump water or coolant fluid through the water pump side 10 due
to the permanent attraction between the eccentric shaft coupler
magnet 34 and the rotor coupler magnet 33.
[0028] The above described operation of the combination pump 2 is
controlled by a single controller 120, contained within the unitary
pump housing 4, on the oil pump side 100. The controller 120 is a
circuit board having programmable logic capable of controlling the
electrical voltage and current applied to the motor 20. The
controller 120 is protected from water from the water pump side 10
by the isolation jacket 32. The controller 120 is also protected
from oil in the oil pump chamber 101 by a bearing 122 and dynamic
seal 124 arrangement connected to the eccentric shaft. The single
controller 120 acts as a controller that controls the flow of both
the water pump side 10 and the oil pump side 100.
[0029] FIG. 4 illustrates a close-up view of the oil pump side 100
of FIG. 2. The rotary pump 110 is shown having a rotor 112 and
vanes 114 inside a pump chamber 101. The inlet 102 and the outlet
103 of the oil pump side 100 are shown.
[0030] FIG. 5 illustrates an exploded view of possible components
of the oil pump side 100. The pump includes the bearing 122 and
dynamic seal 124 located above a rotary pump 110, which in the
present embodiment is a gerotor pump. The rotary pump 110 includes
an inner rotor 112 having vanes 114. The inner rotor 112 is located
within an outer rotor 116. The outer rotor 116 and the inner rotor
112 are located within the pump chamber 101 so that oil (not shown)
is moved. A controller 120 controls operation of the combination
pump 2.
[0031] FIG. 6 illustrates an exploded view of the both the water
pump side 10 and the oil pump side 100. As illustrated the
eccentric motor shaft 130 is shown extending through the rotary
pump 110 the motor magnet 122 and the dynamic fill 124.
[0032] FIG. 7 illustrates Table 1 comparing the engine speed of the
pump to the discharge flow rate of the pump, Table 1 further
compares discharge flow as the constant pressure of the pump
varies. Table 2 compares engine speed to mechanical efficiency of
the motor. Table 2 compares efficiencies as the constant pressure
of the pump varies. FIG. 8 illustrates flow rates as the head of
the pump is varied at different engine speeds.
[0033] FIG. 9 is a cross-sectional side view of an alternate
embodiment of a combination pump 200 having a single controller 604
that independently controls the water pump side 300 and the oil
pump side 400. The combination pump 200 is shown having a water
pump side 300 and oil pump side 400 within a unitary pump housing
302, which have components similar or nearly identical to the
components shown and described in FIGS. 1-8. The main difference
with the present embodiment of the invention compared to the
embodiment shown is FIGS. 1-8 is that the unitary pump housing 302
on the oil pump side 400 has a first stator 500 and second stator
600 both controlled by a single electronic controller 604 located
with the unitary pump housing 302.
[0034] On the oil pump side 400 an eccentric shaft 402 does not
overlap an isolation jacket 311 of the water pump side 300. The
first stator 500 has at least one magnetic coil 502 that
circumscribes a cylinder portion 404 of the eccentric shaft 402.
One end of the eccentric shaft 402 is connected to an oil pump
element 406. The cylinder portion 404 has at least one motor magnet
407 connected to the exterior surface of the cylinder portion 404.
It is also within the scope of this invention for the cylinder
portion 404 to be formed of magnetic material by a process such as
sintering, which will eliminate the need to connect a separate
motor magnet to the surface of the cylinder portion 404. When the
first stator 500 and magnetic coil 502 are energized a magnetic
field is induced which causes the eccentric shaft 402 to rotate and
pump oil in through the oil pump side 400 by rotating the oil pump
element 406 in a manner similar to the oil pump side 100 described
in FIGS. 1-8 above.
[0035] On the water pump side the 300 a rotor 312 connected to the
pump element 314, contained in the isolation jacket 311 has at
least one rotor magnet 316 on the outside surface of the rotor 312.
The second stator 600 has at least one magnetic coil 602 is located
in the oil pump side 400 and circumscribes a portion of the
isolation jacket 311, the rotor magnet 316 and a portion of the
rotor 312. When the second stator 600 is energized a magnetic field
is induced by the magnetic coil 602, which causes the rotor 312 to
rotate the pump element 314 and pump water or coolant through the
water pump side 300 in a manner similar to the operation of the
water pump side 10 described in FIGS. 1-8 above.
[0036] The operation of the combination pump 200 is controlled by
the single controller 604 contained in the oil pump side 400 within
the unitary pump housing 302. The single controller 604
independently controls the operation of the first stator 500 and
second stator 600 to allow for the water pump side 300 and oil pump
side 400 flow to be contained within a unitary pump housing and
controlled by a single controller 604.
[0037] The description of the invention is merely exemplary in
nature and, thus, variations that do not depart from the gist of
the invention are intended to be within the scope of the invention.
Such variations are not to be regarded as a departure from the
spirit and scope of the invention.
* * * * *