WO2018073620A1 - Pompe à piston rotatif - Google Patents

Pompe à piston rotatif Download PDF

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Publication number
WO2018073620A1
WO2018073620A1 PCT/IB2016/056247 IB2016056247W WO2018073620A1 WO 2018073620 A1 WO2018073620 A1 WO 2018073620A1 IB 2016056247 W IB2016056247 W IB 2016056247W WO 2018073620 A1 WO2018073620 A1 WO 2018073620A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
piston
sleeve
sin
cos
Prior art date
Application number
PCT/IB2016/056247
Other languages
English (en)
Russian (ru)
Inventor
Станиславс МИРОПОЛЕЦС
Павелс МИРОПОЛЕЦС
Original Assignee
Станиславс МИРОПОЛЕЦС
Павелс МИРОПОЛЕЦС
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 Станиславс МИРОПОЛЕЦС, Павелс МИРОПОЛЕЦС filed Critical Станиславс МИРОПОЛЕЦС
Priority to PCT/IB2016/056247 priority Critical patent/WO2018073620A1/fr
Priority to EP16919524.5A priority patent/EP3521624A1/fr
Publication of WO2018073620A1 publication Critical patent/WO2018073620A1/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
    • F04C2/22—Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C2250/00—Geometry
    • F04C2250/20—Geometry of the rotor
    • 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
    • F04C2250/00—Geometry
    • F04C2250/30—Geometry of the stator
    • F04C2250/301—Geometry of the stator compression chamber profile defined by a mathematical expression or by parameters

Definitions

  • the invention relates to mechanical engineering and can be used for power drive, cooling and lubrication systems serving various mechanisms where increased accuracy in flow and pressure is required without significant pulsation in the stream, in particular in engines and devices for pumping liquid and gas between containers.
  • the aim of the invention is to improve the accuracy of operation and efficiency of the pump, disclosed in WO / 2015/104597, while ensuring extremely low ripple and the ability to work at low and high pressures.
  • the stated goal is achieved by using a sleeve with a newly developed inner surface.
  • This design improvement combined with well-known designs, provides for the following.
  • the sleeve from the ends is closed by covers and inserted into the housing, made in the form of a shell with inlet and outlet fittings.
  • the covers are the supports of the cam shaft, through one of them the shaft shaft protrudes outward, allowing rotation in both directions to change the pumping direction.
  • the processes of suction and discharge occur due to the fact that the contact lines of the piston with the sleeve divide the internal space into four variables by volume of the cavity.
  • the cavities are connected to the suction nozzle at the moment of their expansion, sucking in liquid or gas, and they are connected to the pumping nozzle at the time of contraction, displacing these substances. Stable pumping occurs.
  • Figure 1 shows one embodiment of a pump device in longitudinal and transverse section.
  • the proposed rotary piston pump contains: sleeve 1 having a through longitudinal passage 8, housing 2, shaft 3, piston 4, through cover 5, blind cover 6, cam 9 of shaft 3, surface grooves 10 on sleeve 1 for seals, inlet and outlet fittings 11 and 1, boss 12 , communication channels 13 and 13 "on the sleeve 1 and / or on the housing 2, channel openings 14 and 14
  • the device of the main components and parts of the pump can be performed as follows.
  • the shaft 3 known for the above technical solution (WO / 2015/104597), has the following characteristics.
  • Shaft 3 consists of sections with different sizes of external surfaces.
  • the output section is supported on the through cover 5 through the bearing or flange.
  • the middle section of the shaft 3 serves for a fixed fit of the cam 9.
  • the inner end section of the shaft 3 is supported on the central part of the blind cover 6 through a sliding or rolling bearing.
  • the output section of the shaft 3 is used to connect the power drive.
  • the configuration of this section may vary depending on known connection methods.
  • the shaft 3 should be equipped with a cam 9, which can be made in the form of a cylinder with a longitudinal hole.
  • the longitudinal axis of the hole and shaft 3 is offset from the axis of the large cylindrical surface by an eccentricity e, which determines the parameters of the piston 4 and the contour curve of the cross section of the inner surface of the sleeve 1.
  • the piston 4 is movably mounted on the cylindrical surface of the cam 9. The length of the cam 9 must be less than the length of the piston four.
  • the sleeve 1 serves as the main link of the pump, providing the above advantages, and is a device in which the rotary pumping mechanism is located.
  • the outer surface of the sleeve 1 is stationary in contact with the inner surface of the shell of the housing 2 and preferably has five surface grooves: three for seals 10, and two are communication channels 13 and 13 "of the same pressure cavities inside the sleeve 1 through four channel openings 14 and 14 ⁇ These grooves and channels can also be made on the housing 2.
  • the distance between the communication channels 13 and 13 “should be equal to the distance between the holes 14 and 14" in the housing under the nozzle 11 and 11 ".
  • the ends of the sleeve 1 have threaded holes for fastening the covers 5 and 6.
  • the contour line of the cross section of the inner passage is a new curve derived for this pump and for use in other devices. This curve is given the name “Miropolec curve”, which has the following formulas in rectangular coordinates:
  • the Miropolec curve provides accurate contact with sliding and rolling of the piston relative to the liner in all areas.
  • the piston 4 has an axial longitudinal hole for landing on the cam 9 of the shaft 3 directly, but movably or through sliding and rolling bearings.
  • the piston 4 or cam 9 of the shaft should be made of the corresponding antifriction material, for example, bronze, etc.
  • the contour of the curve of the cross section of the outer surface of the piston 4 is a closed hypotrochoid curve with three vertices and a radius of the circumscribed circle equal to no.
  • the housing 2 consists of a sheet sheath that extends outside the sleeve 1 and two bosses 12 that are hermetically connected to the sheath, one above each communication channel 13 and 13 "of the sleeve 1.
  • the channels 13 and 13" can also be made on the housing 2.
  • the bosses have threaded through holes holes for connecting the fittings 11 and 1. The distance between the axes of the holes should be equal to the distance between the communication channels 13 and 13 "on the sleeve 1.
  • the caps 5 and 6 serve to center the shaft relative to the sleeve 1 and to limit the longitudinal displacement of the piston 4.
  • the end of the piston 4 should slide freely, but without gaps, along the inner end of the cap 5.
  • This inner part of the cap 5 and 6 is inserted into the end bore of the sleeve 1, centering it, and has a groove under the seal on the centering surface.
  • On the covers 5 and 6 there are simple mounting holes opposite the threaded holes on the ends of the sleeve 1.
  • the covers 5 and 6 differ only in the central part. In the through cover 5 there is a central hole for placing the bearing or flange under the outgoing part of the shaft 3. In the blind cover 6 there is a central recess for the rolling or sliding bearing of the shaft 3.
  • the device must be equipped with o-rings made of a material resilient and resistant to the pumped substance.
  • the piston 4 has four or three points of contact with the sleeve 1, which divide the space between the piston 4 and the sleeve 1 into variable volume parts.
  • the presented pump sucks in and further squeezes out more liquid (about twice) than the gears of the gear pump, conventionally inserted into the internal dimensions in figure 1 (due to the limited height of the teeth).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne des pompes hydrauliques et pneumatiques à rotor de travail qui peuvent s'utiliser pour transférer le liquide et le gaz entre récipients ou pour amener un fluide de travail afin de remplir les fonctions de refroidissement, de lubrification et d'entraînement hydraulique, notamment dans des moteurs à combustion interne. Une meilleure productivité, un meilleur facteur de mérite et une meilleure précision de fonctionnement en absence de pulsations en comparaison avec d'autres types de pompes sont obtenues grâce à l'utilisation dans la présente pompe d'une nouvelle conception de de chambre de travail à l'intérieur du tube.
PCT/IB2016/056247 2016-10-18 2016-10-18 Pompe à piston rotatif WO2018073620A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IB2016/056247 WO2018073620A1 (fr) 2016-10-18 2016-10-18 Pompe à piston rotatif
EP16919524.5A EP3521624A1 (fr) 2016-10-18 2016-10-18 Pompe à piston rotatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2016/056247 WO2018073620A1 (fr) 2016-10-18 2016-10-18 Pompe à piston rotatif

Publications (1)

Publication Number Publication Date
WO2018073620A1 true WO2018073620A1 (fr) 2018-04-26

Family

ID=62018264

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/056247 WO2018073620A1 (fr) 2016-10-18 2016-10-18 Pompe à piston rotatif

Country Status (2)

Country Link
EP (1) EP3521624A1 (fr)
WO (1) WO2018073620A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296500A (en) * 1977-05-06 1981-10-27 Agence Nationale De Valorisation De La Recherche (Anvar) Artifical heart
EP0799996A2 (fr) * 1996-04-04 1997-10-08 Vittorio Bertoli Pompe épitrochoidal
WO2015104597A1 (fr) * 2014-01-07 2015-07-16 Станиславс МИРОПОЛЕЦС Pompe trochoïde

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296500A (en) * 1977-05-06 1981-10-27 Agence Nationale De Valorisation De La Recherche (Anvar) Artifical heart
EP0799996A2 (fr) * 1996-04-04 1997-10-08 Vittorio Bertoli Pompe épitrochoidal
WO2015104597A1 (fr) * 2014-01-07 2015-07-16 Станиславс МИРОПОЛЕЦС Pompe trochoïde

Also Published As

Publication number Publication date
EP3521624A1 (fr) 2019-08-07

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