US2014072425A1PendingUtilityA1
Multi-channel fuel pump
Est. expirySep 10, 2032(~6.2 yrs left)· nominal 20-yr term from priority
F04D 5/005F04D 5/008
42
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Claims
Abstract
A fluid pump includes an outlet for discharging fluid from the fluid pump, a housing, and a motor with a shaft that rotates about an axis. The fluid pump also includes an impeller having a first array of blades radially surrounding the axis and a second array of blades radially surrounding the first array of blades. The fluid pump also includes an inlet plate adjacent to the impeller and has an inlet for introducing fluid into the fluid pump, a first inlet plate flow channel aligned with the first array of blades and having a first inlet plate flow channel cross-sectional area, and a second inlet plate flow channel aligned with the second array of blades and having a second inlet plate flow channel cross-sectional area. The second inlet plate flow channel cross-sectional area is synchronized with the first inlet plate flow channel cross-sectional area.
Claims
exact text as granted — not AI-modifiedWe claim:
1 . A fluid pump comprising:
an outlet for discharging fluid from said fluid pump; a housing; a motor with a shaft that rotates about an axis; an impeller having a first array of blades radially surrounding said axis and a second array of blades radially surrounding said first array of blades, said impeller being rotatable by said shaft of said motor; an inlet plate adjacent to said impeller and having an inlet for introducing fluid into said fluid pump, a first inlet plate flow channel aligned with said first array of blades and having a first inlet plate flow channel cross-sectional area, and a second inlet plate flow channel aligned with said second array of blades and having a second inlet plate flow channel cross-sectional area; wherein rotation of said impeller pumps fluid from said inlet to said outlet; and wherein said second inlet plate flow channel cross-sectional area is synchronized with said first inlet plate flow channel cross-sectional area.
2 . A fluid pump as in claim 1 wherein said first inlet plate flow channel cross-sectional area and said second inlet plate flow channel cross-sectional area are synchronized according to the equation:
A
n
=
Q
ω
·
R
n
·
ϕ
0
where Q is the volumetric flow rate of said fluid pump, ω is the rotational rate of said impeller, R n is the radius of said first inlet plate flow channel or said second inlet plate flow channel where n signifies the number of the inlet plate flow channel, and φ 0 is the non-dimensional flow of said fluid pump.
3 . A fluid pump as in claim 2 wherein φ 0 is about 0.7.
4 . A fluid pump as in claim 2 wherein φ 0 is the non-dimensional flow of said fluid pump at maximum efficiency.
5 . A fluid pump as in claim 2 wherein R n is determined from the equations:
ψ
0
=
P
1
ρ
·
ω
2
·
R
1
2
ψ
0
=
P
2
ρ
·
ω
2
·
R
2
2
P
=
P
1
+
P
2
R
2
=
R
1
+
ɛ
where P is the total pressure generated by said fuel pump, P 1 is the pressure generated by said first inlet plate flow channel, P 2 is the pressure generated by said second inlet plate second flow channel, and ε is the radial separation between R 1 and R 2 .
6 . A fluid pump as in claim 1 wherein an inlet plate transition channel fluidly connects said first inlet plate flow channel with said second inlet plate flow channel.
7 . A fluid pump as in claim 6 wherein said inlet plate transition channel fluidly connects said first inlet plate flow channel with said second inlet plate flow channel in series.
8 . A fluid pump as in claim 1 further comprising:
an outlet plate adjacent to said impeller on the side said impeller that is opposite said inlet plate, said outlet plate having an outlet passage in fluid communication with said outlet; a first outlet plate flow channel aligned with said first array of blades and having a first outlet plate flow channel cross-sectional area; and a second outlet plate flow channel aligned with said second array of blades and having a second outlet plate flow channel cross-sectional area;
wherein said second outlet plate flow channel cross-sectional area is synchronized with said first outlet plate flow channel cross-sectional area.
9 . A fluid pump as in claim 8 wherein the combined cross-sectional area of said first inlet plate flow channel cross-sectional area and said first outlet plate flow channel cross-section area and the combined cross-sectional area of said second inlet plate flow channel cross-sectional area and said second outlet plate flow channel cross-sectional area are synchronized.
10 . A fluid pump as in claim 9 wherein the combined cross-sectional area of said first inlet plate flow channel cross-sectional area and said first outlet plate flow channel cross-section area and the combined cross-sectional area of said second inlet plate flow channel cross-sectional area and said second outlet plate flow channel cross-sectional area are synchronized according to the equation:
A
n
=
Q
ω
·
R
n
·
ϕ
0
where Q is the volumetric flow rate of said fluid pump, ω is the rotational rate of said impeller, R n is the radius of said first inlet plate flow channel and said first outlet plate flow channel or said second inlet plate flow channel and said second outlet plate flow channel where n signifies the number of the outlet plate flow channel, and φ 0 is the non-dimensional flow of said fluid pump.
11 . A fluid pump as in claim 10 wherein R n is determined from the equations:
ψ
0
=
P
1
ρ
·
ω
2
·
R
1
2
ψ
0
=
P
2
ρ
·
ω
2
·
R
2
2
P
=
P
1
+
P
2
R
2
=
R
1
+
ɛ
where P is the total pressure generated by said fuel pump, P 1 is the pressure generated by said first inlet plate flow channel together with said first outlet plate flow channel, P 2 is the pressure generated by said second inlet plate flow channel together with said second outlet plate flow channel, and ε is the radial separation between R 1 and R 2 .
12 . A fluid pump as in claim 8 wherein the ratio of the width to the depth of first inlet plate flow channel is about 2.5:1, the ratio of the width to the depth of second inlet plate flow channel is about 2.5:1, the ratio of the width to the depth of first outlet plate flow channel is about 2.5:1, and the ratio of the width to the depth of second outlet plate flow channel is about 2.5:1.
13 . A fluid pump comprising:
an outlet for discharging fluid from said fluid pump; a housing; a motor with a shaft that rotates about an axis; an impeller having N arrays of blades such that N≧2 wherein each array of blades radially surrounds said axis, and wherein each one of said arrays of blades are spaced radially from every other of said arrays of blades, said impeller being rotatable by said shaft of said motor; an inlet plate adjacent to said impeller and having an inlet for introducing fluid into said fluid pump, a plurality of inlet plate flow channels such that each one of said plurality of inlet plate flow channels is aligned with one of said arrays of blades and such that each of said arrays of blades are aligned with one of said inlet plate flow channels, wherein each of said inlet plate flow channels has a corresponding inlet plate flow channel cross-sectional area; wherein rotation of said impeller pumps fluid from said inlet to said outlet; and wherein said inlet plate flow channel cross-sectional area of each of said inlet plate flow channels is synchronized with said inlet plate flow channel cross-sectional area of every other of said inlet plate flow channels.
14 . A fluid pump as in claim 13 wherein said first inlet plate flow channel cross-sectional area and said second inlet plate flow channel cross-sectional area are synchronized according to the equation:
A
n
=
Q
ω
·
R
n
·
ϕ
0
,
n is an integer from 1 to N
where Q is the volumetric flow rate of said fluid pump, ω is the rotational rate of said impeller, R n is the radius of the n th inlet plate flow channel, and φ 0 is the non-dimensional flow of said fluid pump.
15 . A fluid pump as in claim 14 wherein φ 0 is about 0.7.
16 . A fluid pump as in claim 14 wherein φ 0 is the non-dimensional flow of said fluid pump at maximum efficiency.
17 . A fluid pump as in claim 14 wherein R n is determined from the equations:
ψ
0
=
P
n
ρ
·
ω
2
·
R
n
2
,
n is an integer from 1 to N
P=ΣP n , n is an integer from 1 to N
R n+1 =R n +ε, n is an integer from 1 to N− 1
where P is the total pressure generated by said fuel pump, P n is the pressure generated by the n th flow channel, and ε is the radial separation between adjacent said inlet plate flow channels.
18 . A fluid pump as in claim 13 further comprising:
an outlet plate adjacent to said impeller on the side said impeller that is opposite said inlet plate, said outlet plate having an outlet passage in fluid communication with said outlet; a plurality of outlet plate flow channels such that each one of said plurality of outlet plate flow channels is aligned with one of said arrays of blades and such that each of said arrays of blades are aligned with one of said outlet plate flow channels, wherein each of said outlet plate flow channels has a corresponding outlet plate flow channel cross-sectional area;
wherein said outlet plate flow channel cross-sectional area of each of said outlet plate flow channels is synchronized with said outlet plate flow channel cross-sectional area of every other of said outlet plate flow channels.
19 . A fluid pump as in claim 18 wherein the combined cross-sectional area of each n th inlet plate flow channel cross-sectional area and each corresponding n th outlet plate flow channel cross-section area and the combined cross-sectional area of every other n th inlet plate flow channel cross-sectional area and every other corresponding n th outlet plate flow channel cross-sectional area are synchronized.
20 . A fluid pump as in claim 19 wherein the combined cross-sectional area of each n th inlet plate flow channel cross-sectional area and each corresponding n th outlet plate flow channel cross-section area and the combined cross-sectional area of every other n th inlet plate flow channel cross-sectional area and every other corresponding n th outlet plate flow channel cross-sectional area are synchronized according to the equation:
A
n
=
Q
ω
·
R
n
·
ϕ
0
,
n is an integer from 1 to N
where Q is the volumetric flow rate of said fluid pump, ω is the rotational rate of said impeller, R n is the radius of the n th inlet plate flow channel and n th outlet plate flow channel, and φ 0 is the non-dimensional flow of said fluid pump.
21 . A fluid pump as in claim 20 wherein R n is determined from the equations:
ψ
0
=
P
n
ρ
·
ω
2
·
R
n
2
,
n is an integer from 1 to N
P=ΣP n , n is an integer from 1 to N
R n+1 =R n +ε, n is an integer from 1 to N− 1
where P is the total pressure generated by said fuel pump, P n is the pressure generated by the n th flow channel, and ε is the radial separation between adjacent said inlet plate flow channels or between adjacent said outlet plate flow channels.Cited by (0)
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