Pumps – Expansible chamber type – Moving cylinder
Reexamination Certificate
1999-05-17
2001-10-23
Walberg, Teresa (Department: 3742)
Pumps
Expansible chamber type
Moving cylinder
C417S104000, C417S240000
Reexamination Certificate
active
06305917
ABSTRACT:
DESCRIPTION
The present invention relates to a pump consisting of a mechanism transmitting to a tubular circuit system periodic rotational inertial forces developing in the liquid contained therein continuous pressure and flow.
One of the purposes of the present invention is to make available a pump having simple design, versatile employment and economical manufacture. Another purpose is to make available a pump requiring few members subject to wear, of small size, and designed for amplification to greater flows and pressures.
This and other purposes discussed in the description are achieved in a pump having the characterizing characteristics disclosed hereinafter.
The pump proposed has the advantage of developing pressure in tubular circuits along the axis of which rotational inertial forces cause an elementary pressure differential at all points of the liquid contained and whose integral originates at a pressure increasing from the inlet to the outlet of the circuit. In this manner the liquid is not subject to any mechanical operation and therefore displays exceptionally small hydraulic losses.
The pump proposed has the advantage of not having any predetermined rotation speed such as for example in piston pumps nor any particular rotation speed as in centrifugal pumps while the only speed limit of the pump proposed is that determined by the strength of the materials employed in its construction.
The pump proposed has the advantage of not having mechanical members like pistons, diaphragms for protection thereof, number of impellers in relation to pressure developed, nor hydraulic devices designed to convert kinetic energy into pressure energy. These members reduce efficiency and increase construction and maintenance costs. The only additional members of the proposed pump are the one-way valves which however are always open with the one exception of the transitory starting phase.
In the proposed pump the pressure developed is proportionate to the product &rgr;n
s
&phgr;
o
r
o
2
n
2
in which the variables n
s
and &phgr;
o
have the character of absolute novelty.
Concerning the variable n=number of revolutions per second it is noted in particular that in the case of the pump proposed it can increase continuously until it reaches a value limited only by the mechanical characteristics set for the machine and accordingly the small upper limit of n as in piston pumps or a particular value of n necessary for its operation as in centrifugal pumps is to be excluded.
Concerning the variable &phgr;
o
° it is noted that it can easily be set in the range &phgr; (1°; 10°) and that accordingly its value can be selected to obtain the desired values for the other variables in play.
Concerning the variable n
s
=number of turns of the active circuit it is noted that it replaces the function of the plurality of the impellers and associated diffusers adopted in centrifugal pumps to increase developed pressure. Replacement with the number of turns has the advantage of a radical design simplification and reduction of manufacturing and maintenance costs. In addition the number n
s
can be readily corrected with small changes in &phgr;
o
, r
o
and n.
The kinetic energy of the proposed pump is constant because it consists of one or two pairs of identical oscillating rotors with equal frequency and with phase difference of 90°. This makes flywheel counterweights unnecessary.
The peak centrifugal force of the oscillating counterweights ‘m’ expressed by f
c
=mr
o
{dot over (&thgr;)}
2
&phgr;
o
2
is relatively small because the coefficient &phgr;
o
2
<0,03 reduces the value of the above mentioned product to less than 3%. This simplifies rotor balancing.
The proposed pump has the advantage of not having members like stuffing boxes, diaphragms and pistons for the above reasons and also because these are the most likely cause of possible losses of dangerous liquids.
The proposed pump has the advantage of being able to perform pumping even of slushy water because it is made up of smooth tubes having slight hydraulic resistance at every point of which an additional pressure increase is generated.
The proposed pump together with the advantage of exceptionally high efficiency, relatively negligible construction and maintenance costs and great versatility of use displays the exclusive advantage of being convertible at negligible additional cost into a multifunction pump to meet many pumping requirements simultaneously.
Further characteristics, details and advantages appear in the following description of various embodiments of the present invention as set forth in the following paragraph headings A. B. and C., and associated numbered paragraphs with reference to the figures of the accompanying drawings.
A) 1) Mechanical details,
2) Key for symbols used,
3) Description of FIGS,
B) 1) Single active circuits,
2) 2-phase circuits,
3) Embodiment of 2-phase circuits in accordance with diagram a), b), c), d), e),
C) 1) 2-phase pump,
2) 4-phase pump,
3) Multifunction pump,
4) 2-phase circuit connections,
5) oscillating rotor motion generated by a guided bearing.
A.1) Mechanical Details
no.
1
—Support frame
no.
2
—Rotor R
1
oscillating around the shaft
15
and coupled with a connecting rod and crank applied to the shaft
4
with phase angle &thgr;=0°,
no.
3
—Rotor R
2
oscillating around the shaft
16
or if absent around the shaft
15
and coupled with connecting rod and crank applied to the shaft
4
with phase angle &thgr;=90°,
no.
4
—Crankshaft for the oscillating motion of the rotors oscillating on the bearings
11
fastened to the frame
1
to which the motor is applied,
no.
5
—Crank applied to the shaft
4
for the oscillating motion of R
1
with angular position on the shaft
4
&thgr;=0° (see FIG.
1
),
no.
6
—Crank for the oscillating motion of R
2
with angular position on the shaft
4
&thgr;=90° (see FIG.
1
),
no.
7
—Pin of the crank coupled to the big end of connecting rod
9
,
no.
8
—Rotors R
11
and R
22
coupled with the connecting rods and cranks arranged on the shaft
4
with phase angles &thgr;=180°, 270° respectively,
no.
9
—Connecting rod for the motion of R
1
,
no.
10
—Connecting rod for the motion of R
2
,
no.
11
—Bearing of the shaft of the cranks
4
,
no.
12
—Pin of the crank coupled to the big end of the connecting rod
10
,
no.
13
—Gudgeon pin
13
coupled to the small end of the connecting rod
9
fastened to the rotor
no.
14
—Gudgeon pin of the connecting rod
10
fastened to the rotor R
2
,
no.
15
—Shaft fastened to the support frame
1
around which turn the pertinent rotors,
no.
16
—Shaft fastened to the support frame
1
around which turn the pertinent rotors,
no.
17
—Rotation bearing of R
1
and R
11
,
no.
18
—Rotation bearing of R
2
and R
22
,
no.
19
—Single left-hand active circuit C
1
no.
20
—Single right-hand active circuit C
1′
no.
21
—Single left-hand active circuit C
11
no.
22
—Single right-hand active circuit C
11′
no.
23
—Single left-hand active circuit C
2
no.
24
—Single right-hand active circuit C
2′
no.
25
—Single left-hand active circuit C
22
no.
26
—Single right-hand active circuit C
22′
no.
27
—One-way valve V
1
located at the inlet of the circuit
19
,
no.
28
—One-way valve V
1′
located at the inlet of the circuit
20
,
no.
29
—One-way valve V
2
located at the inlet of the circuit
23
,
no.
30
—One-way valve V
2′
located at the inlet of the circuit
24
,
no.
31
—One-way valve V
11
located at the inlet of the circuit
21
,
no.
32
—One-way valve V
11′
located at the inlet of the circuit
22
,
no.
33
—One-way valve V
22
located at the inlet of the circuit
25
,
no.
34
—One-way valve V
22′
located at the inlet of the circuit
26
,
no.
35
—2-phase circuit CB
1
consisting of C
1
and C
1′
with the valves V
1
and V
1′
fastened on R
1
,
no.
36
—2-phase circuit CB
11
consisting of C
11
and C
11′
with the valves V
11
and V
11′
fastened on R
11
or if absent on R
1
,
no.
37
—2-phase circui
Campbell Thor
Shlesinger Fitzsimmons & Shlesinger
Walberg Teresa
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