WO1999006709A1 - Pompe volumetrique - Google Patents

Pompe volumetrique Download PDF

Info

Publication number
WO1999006709A1
WO1999006709A1 PCT/NZ1998/000114 NZ9800114W WO9906709A1 WO 1999006709 A1 WO1999006709 A1 WO 1999006709A1 NZ 9800114 W NZ9800114 W NZ 9800114W WO 9906709 A1 WO9906709 A1 WO 9906709A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating member
axis
inner rotating
blade
outer blade
Prior art date
Application number
PCT/NZ1998/000114
Other languages
English (en)
Inventor
Roger John Smith
Original Assignee
The Continuous-Cycle Engine Development Co. Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Continuous-Cycle Engine Development Co. Limited filed Critical The Continuous-Cycle Engine Development Co. Limited
Priority to AU86533/98A priority Critical patent/AU8653398A/en
Publication of WO1999006709A1 publication Critical patent/WO1999006709A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/36—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movements defined in groups F04C2/22 and F04C2/24

Definitions

  • This invention relates to a positive displacement pump and, in particular, although not necessarily solely, a blower unit for the pumping of compressible fluids such as air.
  • blower units utilising cooperating tapered screw threads which draw the compressible fluid from one end of the threads and compress the fluid through increasingly tighter pitched threads to the outlet.
  • Such units can only shift the volume of air between the threads and have difficulty in shifting large volumes of air. Furthermore, difficulties in sealing can be present in such units.
  • a further form of positive displacement pump or blower unit utilises interengaging rotating members, such as gears and rotors, where an adjacent rotating member displaces the fluid in a pocket of an adjacent rotor as the two rotate.
  • the unit must be capable of housing two adjacent rotating members to shift the volume of air displaced, by one fitting within the other.
  • the invention may broadly be said to consist in a positive displacement pump including:
  • At least one outer blade mounted with respect to a first axis
  • At least one inner rotating member mounted with respect to a second axis offset from said first axis
  • a separator mounted with respect to said first axis to seal between said at least one inner rotating member and said at least one outer blade substantially when said at least one outer blade is not nested in said pocket;
  • said at least one inner rotating member rotates relative to said first axis and maintains a substantially constant radial orientation with respect to said at least one outer blade.
  • the invention may broadly be said to consist in a positive displacement pump including: a housing;
  • At least one outer blade rotating with respect to said inlet and outlet about a first axis
  • a separator mounted so as to seal between said inner rotating member and said at least one outer blade over a portion of the rotation of said outer blade substantially when said outer blade is not nested within said pocket, said separator being substantially stationary with respect to said inlet and said outlet.
  • said separator of the two paragraphs immediately above may include a member having a first surface adjacent a portion of the outer circumference of said inner rotating member and a second surface adjacent an innermost circumference of said outer rotating blade(s).
  • said pump is provided as a blower unit for a rotary engine.
  • the invention may broadly be said to consist in a positive displacement pump including:
  • At least one outer blade stationary with respect to said inlet and said outlet and also stationary with respect to a first axis
  • an inner rotating member mounted on a second axis offset from said first axis with said second axis rotating about said first axis such that said inner rotating member maintains a substantially constant radial orientation with respect to said at least one outer blade;
  • a separator mounted about said first axis to rotate about said first axis relative to the or each outer blade such that said separator nests between said inner rotating member and the or each said outer blade over a portion of the movement of said inner rotating member when the or each said outer blade is not nested within said pocket;
  • timing means to time the rotation of said inner rotating member with respect to said first axis and said separator about said first axis such that both said inner rotating member and said separator maintain the same rotational speed and in the same direction.
  • FIGURE 1 is a cross-sectional side elevation through a pump in accordance with one embodiment of the invention
  • FIGURE 2 is a cross-sectional front elevation of the pump of Figure 1 ;
  • FIGURE 3 is a further cross-sectional elevation of the pump of Figure 1 ;
  • FIGURE 4 is a diagrammatic view of a series of front elevations of the pump showing approximately one half a revolution of the pump;
  • FIGURE 5 is a diagrammatic view of a series of elevations as provided in Figure 4 showing a further one half revolution of the pump;
  • FIGURE 6 is a cross-sectional front elevation through a further embodiment of the invention.
  • FIGURE 7 is a cross-sectional side elevation through the embodiment of Figure 6;
  • FIGURE 8 is a front view of the embodiments of Figure 7 showing the gearing
  • FIGURE 9 is a front view of a further embodiment of the invention.
  • FIGURE 10 show a diagrammatic view of a series of front elevations of the pump of Figure 6 during one revolution.
  • the invention can be seen to reside in a pump having at least one outer rotating blade 1 .
  • the pump will include at least two blades 1 and, in the embodiment shown in the drawings, three blades 1 are provided substantially equally positioned around the perimeter of the pump.
  • the outer rotating blades 1 are provided as part of a circumferential rotating cylinder 7 that rotates about a first axis defined by the main bearings 14 and 1 6 being a small and large main bearing respectively.
  • the pump includes an inner rotating member 2 rotating within the outer rotating cylinder 7 to which the blades 1 are connected.
  • the inner rotating member 2 rotates about a second axis offset from the first axis. This second axis is defined by the shaft 5 extending through the inner rotating member or rotor 2.
  • a pocket 26 is provided within the inner rotating member 2 for each of the blades 1 rotating with the inner rotating member 2.
  • the blades 1 and inner rotating member 2 are provided on offset axes although linked to ensure that they rotate simultaneously at the same rotational speed and in the same direction.
  • the blades 1 nest within the pockets 26 throughout a portion of the rotation of the blades 1 and inner rotating member 2. However, due to the offset nature of the axis about which they turn and the relative diameters, the blade 1 is also withdrawn from its associated pocket 26 through a portion of the rotation.
  • the inner rotating member 2 is wholly within the outermost circumference of the blades 1 defined by the inner circumference of the cylinder 7 supporting the blades 1 .
  • a separator 3 or shoe is provided between the inner rotating member 2 and the blades 1 over a portion of the blade rotation when the
  • this shoe 3 will have a side 27 substantially adjacent to and conforming to the outermost circumference of the inner rotating member 2.
  • a further side 28 is adjacent and conforms to the innermost circumference of rotation of the blades 1 as defined by the arcuate travel of the tip 29 of
  • the separator 3 is thus shown in this embodiment with a substantially crescent-shaped cross section.
  • An exterior housing 4 may be provided around this entire apparatus should this pump which, in this preferred form, is provided as
  • a blower unit is provided as a stand alone apparatus.
  • Side plates 8 may also be provided to provide containment to the chambers defined by the pockets 26 and the blades 1 within the outer cylinder 7.
  • an air gap 9 is provided between the outer rotating cylinders 7 and the housing 4.
  • J U pressure pipe 21 are provided and are in communication with the vacuum port 1 2 and pressure port 1 1 respectively as shown in Figure 2.
  • rotor shaft 5 is shown in the centre of a drive unit 10.
  • This drive unit 10 terminates in pivotal connections 17 linked by link members 6 to similar pivotal connections 1 7A provided on the blades 1 .
  • Each of the pivotal connections 1 7 includes a drive pin at or adjacent a respective drive end of arm 10A and the link member 6 can include apertures at either end to fit over the drive pins of pivotal connections 1 7 and 1 7A.
  • a bearing such as a needle roller bearing is provided on the drive pins of pivotal connections 1 7, 17A or in the inner circumference of the apertures at the ends of the links 6 to allow relative rotation.
  • the drive and timing equipment could utilise gears or other timing and drive chains to ensure the simultaneous rotation about the first and second axis in the same direction and at the same rotational speed.
  • valves 18 and 1 9. These may be provided to act as valves between the chambers defined by the blades 1 , rotor 2 and side plates 8 and the inlet and outlet ports 1 2, 1 1 .
  • the valve 1 8 is a vacuum spring valve and the valve 1 9 a pressure spring valve.
  • the valves may be ⁇ 5 dispensed with entirely in some arrangements or alternative valve constructions can easily be used.
  • This particular embodiment has described inlet and outlet ports 1 2, 1 1 which are substantially stationary with respect to the separator 3 while said blades 1 and rotor 2 rotate. Rather than using the stationary ports as described, the apparatus could be ported with rotary ports or ported through the blades 1 . An example of porting through the blades 1 is described in the alternative embodiment described in Figures 6 and 7.
  • the blades 1 seal against the surface of the pocket 26 through minimal clearance provided between these.
  • the area 22 continues to expand forming the vacuum chamber, it reaches a point shown by the shaded area 32 halfway through the formation of this pocket 26 at which the blade 1 begins to clear the pocket 26. It is at this point that the
  • separator or shoe 3 acts to split the vacuum area 22 effectively into two portions defined by the shaded areas 23 and 24 shown in the last diagram in Figure 4.
  • the pump acts as a positive displacement pump creating a vacuum chamber and a pressure chamber.
  • the pump operates around the outer circumference of the inner rotating member 2 and within the outer rotating member 7. It operates against the full circumference of the outer rotating member 7.
  • FIG. 6 a further embodiment of the invention is shown.
  • the blade 1 is stationary with respect to the outlet port 1 1 and the inlet port 1 2.
  • These ports 1 1 and 1 2 may be provided in the blade 1 itself.
  • the separator 3 may rotate about a first axis being substantially central within the outer housing 4.
  • the inner rotating member or rotor 2 is mounted on its own second axis which moves rotationally about the first axis. As the second axis moves about the first axis, the rotor 2 maintains a substantially constant radial orientation with respect to the blade. This is illustrated in Figures 10 and 1 1 especially. In the example shown, the pocket 26 will remain substantially facing towards the blade 1 as the entire rotor 2 moves about the central axis.
  • the tips 33 of the rotor 2 adjacent the pocket 26, such as tip 33 open and close the various chambers being formed within the pump from access to the ports such as the inlet port 1 2.
  • initial movement of the rotor 2 about a central axis moves the tip 33 across the inner surface of the housing 4 containing the blade 1 to gradually open the area formed by the blade 1 , the surface of the pocket 26 and the tip 33, to the inlet port 1 2.
  • Figure 1 0 especially referred to in greater detail below.
  • gears 34, 35 and 36 and associated idlers may be utilised to ensure the simultaneous rotation of the rotor 2 and the separator 3 about the central axis. Both are moving in the same direction, for example clockwise, about the central axis and at the same rotational speed such that both assume the position shown in Figure 6 after a 360° revolution about said central axis.
  • FIG. 6 and 7 If an embodiment as shown in Figures 6 and 7 is to include multiple blades 1 , a number of inlets and outlets 1 2 and 1 1 might be required with at least one inlet and at least one outlet being provided for each blade 1 .
  • This embodiment can be of advantage in balancing the rotational forces present in the pump and providing a smoother output.
  • This pump will operate as described with respect to Figures 10 and 1 1 apart from the additional capacity provided by the additional rotor 2.
  • pumps In addition to being used as either a vacuum or a pressure pump, pumps generally also have the facility to act as motors.
  • a pressurised fluid could be supplied to the embodiments shown and drive drawn from the embodiments rather than drive being supplied to the embodiments to operate them as a pump.
  • these embodiments in which expanding and contracting chambers are provided for the expansion or compression of fluids within the chambers could be utilised as a combustion motor should a fuel and ignition mix be supplied to the chamber to drive the expansion of the chamber and may be exhausted through the current outlet ports.
  • the same arrangement may be used to provide a combustion motor rather than a pump.
  • the pump can be used as a blower unit although it can be used in all other situations that pumps of this type may be desired.
  • blower unit is in conjunction with a rotary engine such as that described in international application No. PCT/ NZ95/0001 5.
  • the motor described in that international specification utilises the same off axis rotation between the centre of rotation of the housing of the motor and the centre of rotation of the pistons. Therefore, this simultaneous timed drive of the two components is already provided and the drive can be utilised directly into the blower unit to rotate the blades and inner rotating members respectively.
  • blower unit may substantially save on componentry from this stand alone unit due to the drive being able to be accessed directly.
  • a blower unit may be bolted directly onto the end of such a motor utilising the same two axes of rotation as the motor does.
  • this invention provides a pump which provides an efficient displacement of fluids and, in particular, compressible fluids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

L'invention concerne une pompe volumétrique comportant trois palettes (1) qui tournent avec un corps externe (4) autour d'un premier axe décalé par rapport à l'axe de rotation d'un élément interne (2). Quand la palette (1) et l'élément interne (2) tournent simultanément, les palettes (1), pour une partie de leur rotation, balaient des poches (26) définies dans l'élément interne (2) jusqu'à ce qu'un séparateur (3), à la fin de sa course d'aspiration, divise une poche (26) de façon à transférer une partie de ladite poche (26), sous aspiration, dans le fluide comprimé qui se trouve dans la poche adjacente (26) située entre les deux palettes immédiatement précédentes (1). D'autres modes de réalisation ne comportent qu'une seule palette (1), qui peut être fixe alors que l'élément interne (2) et le séparateur (3) tournent.
PCT/NZ1998/000114 1997-08-04 1998-07-29 Pompe volumetrique WO1999006709A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU86533/98A AU8653398A (en) 1997-08-04 1998-07-29 Positive displacement pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ32848697 1997-08-04
NZ328486 1997-08-04

Publications (1)

Publication Number Publication Date
WO1999006709A1 true WO1999006709A1 (fr) 1999-02-11

Family

ID=19926392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ1998/000114 WO1999006709A1 (fr) 1997-08-04 1998-07-29 Pompe volumetrique

Country Status (3)

Country Link
AU (1) AU8653398A (fr)
TW (1) TW372260B (fr)
WO (1) WO1999006709A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999024716A1 (fr) * 1997-11-10 1999-05-20 Jenkins, Graeme, Reid Pompe
US8540133B2 (en) 2008-09-19 2013-09-24 Ethicon Endo-Surgery, Inc. Staple cartridge
CN112833004A (zh) * 2021-01-19 2021-05-25 邵立坤 一种内啮合齿轮泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10849205B2 (en) 2015-10-14 2020-11-24 Current Lighting Solutions, Llc Luminaire having a beacon and a directional antenna

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694983A (en) * 1951-09-24 1954-11-23 Rockwell Mfg Co Rotor vane control
FR1337661A (fr) * 1962-10-25 1963-09-13 Moteur à pistons rotatifs
US3330215A (en) * 1965-09-10 1967-07-11 Yamane Seiji Reversible rotary pump
GB1362686A (en) * 1972-10-20 1974-08-07 Cheshire Software Ltd Rotary piston machines
US4741308A (en) * 1986-08-15 1988-05-03 Ballinger Michael S Rotary internal combustion engine and method of operation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694983A (en) * 1951-09-24 1954-11-23 Rockwell Mfg Co Rotor vane control
FR1337661A (fr) * 1962-10-25 1963-09-13 Moteur à pistons rotatifs
US3330215A (en) * 1965-09-10 1967-07-11 Yamane Seiji Reversible rotary pump
GB1362686A (en) * 1972-10-20 1974-08-07 Cheshire Software Ltd Rotary piston machines
US4741308A (en) * 1986-08-15 1988-05-03 Ballinger Michael S Rotary internal combustion engine and method of operation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999024716A1 (fr) * 1997-11-10 1999-05-20 Jenkins, Graeme, Reid Pompe
US8540133B2 (en) 2008-09-19 2013-09-24 Ethicon Endo-Surgery, Inc. Staple cartridge
CN112833004A (zh) * 2021-01-19 2021-05-25 邵立坤 一种内啮合齿轮泵
CN112833004B (zh) * 2021-01-19 2024-01-12 南通油顺液压机械有限公司 一种内啮合齿轮泵

Also Published As

Publication number Publication date
AU8653398A (en) 1999-02-22
TW372260B (en) 1999-10-21

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