EP1602826A1 - Pumpenantrieb - Google Patents

Pumpenantrieb Download PDF

Info

Publication number: EP1602826A1
Authority: EP; European Patent Office
Prior art keywords: piston; pump drive; rotor; pump; drive according
Prior art date: 2004-06-04
Legal status (The legal status 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 status listed.): Granted

Application number

EP04405346A

Other languages

English (en)

French (fr)

Other versions

EP1602826B1 (de

Inventor

Jean-François Pfister

Joel Niklaus

Christophe Dexet

Vincent Froidevaux

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Sonceboz SA

Societe Industrielle de Sonceboz SA

Original Assignee

Sonceboz SA

Societe Industrielle de Sonceboz SA

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.)

2004-06-04

Filing date

2004-06-04

Publication date

2005-12-07

2004-06-04 Application filed by Sonceboz SA, Societe Industrielle de Sonceboz SA filed Critical Sonceboz SA

2004-06-04 Priority to DE602004007247T priority Critical patent/DE602004007247T2/de

2004-06-04 Priority to EP04405346A priority patent/EP1602826B1/de

2004-06-04 Priority to AT04405346T priority patent/ATE365868T1/de

2005-05-27 Priority to US11/139,911 priority patent/US20050244276A1/en

2005-12-07 Publication of EP1602826A1 publication Critical patent/EP1602826A1/de

2007-06-27 Application granted granted Critical

2007-06-27 Publication of EP1602826B1 publication Critical patent/EP1602826B1/de

2024-06-04 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

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Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams

Definitions

the present invention relates to a diaphragm pump drive or to a piston, with a stepper motor.
the stepper motor has the advantage of allowing, by electronic means, better control the flow of pumped fluid, since the stepper motor allows a fine control of the motor rotation speed, as well as to know the angular position of the rotor without requiring an external sensor for this purpose.
the pumped fluid flow can be varied by changing the rotational speed of the motor rotor, which varies the return frequency of the piston coupled to the rotor through a mechanism to cam.
the variation of the return frequency of the piston can have a harmful influence on the pressure variation in the fluid pumped, dependent harmonic frequencies of the hydraulic system in which the pump, and the degree of damping of pulsations or other factors.
the mechanical adjustment of the amplitude can have disadvantages on the plane the size and complexity of the system, as well as the adjustment possibilities.
An object of the invention is to provide a piston pump drive or membrane can be precisely adjusted over a range of operation extended.
a diaphragm pump drive or piston comprising a stepper motor, a reducing device and a mechanism of transformation of the rotary movement into a translational movement, comprising a rotatable member and a piston member for moving a piston or a diaphragm of the pump, the stepping motor comprising a coupled rotor, through the reducing device, to the rotating member, engaging the piston member to drive it in a movement essentially linear motion, characterized in that the stepper motor and the device of translation are adapted to make an angular displacement back and forth of the rotary member of the translation mechanism at an angle less than 360 °.
the transformation device may comprise a cam element on the rotating part, engaging a complementary cam on the body essentially linear displacement.
the angular rotation angle of the rotary cam element defines the amplitude of the linear displacement of the piston member.
the angle of rotation of the cam is electronically adjusted by the motor control step-by-step as well as the control of the speed and accelerations of the motor, without requiring adjustment of mechanical parts.
the flow of the pump can be varied not only by changing the frequency of piston stroke, but also its amplitude by a command electronic step-by-step motor, which optimizes the operation of the pump over a wide range of values, that is to say for large and low flow rates, controlling amplitude and / or frequency.
the transmission of the engine torque through the gearbox implies that the motor rotor can perform several laps before the change of direction. This allows to obtain a finer control of the angular displacement, in view of the reduction of moving through the gearbox, and better control the boom of deceleration and acceleration, especially when changing direction of rotation.
a pump drive 1 comprises a electric stepper motor 2 with a wound stator 3 and a rotor 4, a reducing device 5, a device 6 for transforming the rotary motion into a substantially linear movement, and a piston member 7.
the gearbox 5 comprises gear wheels 8, 9, 10, 11 carrying out a reduction of the transmission ratio between the axis 12 of the rotor and the output axis 13 reducer.
the transformation mechanism 6 includes an element of cam 14 secured to the output shaft 13 of the reducing and engaging device a complementary cam element 15, in the form of a freewheel, mounted on the piston member 7.
the piston member 7 is mounted in a bearing 16 of a body or support 17 of the drive to guide the piston member in a translation movement along an axis A.
the cam member 14 is, in this example, in the form of a substantially flat disk comprising a opening 18 whose periphery 19, or at least a part of the periphery, has the function of a cam surface engaging the cam member complementary member 15 mounted on the piston member 7 for the displacement of this last in a back-and-forth motion when the rotary cam member 14 angular displacement back and forth.
a first extreme angular position 20a of the cam profile corresponds to an extreme axial position of the body of piston and the other extreme angular position 20b of the cam surface corresponds to the extreme axial position of the piston member in the other direction.
the displacement of the cam member between the extreme angular positions 20a, 20b therefore corresponds to the maximum amplitude of the piston member.
the opposed surfaces 20c, 20d of the cam allow to push and pull the piston member without requiring a recoil spring, which reduces wear by friction and decreases the number of components. Cam surfaces opposites also allow for strong accelerations and decelerations.
the flow of the pump can be varied, by acting on the number of steps performed by the stepper motor rotor before the change of direction, by an electronic command counting the number of steps and controlling the deceleration, stopping and acceleration in the other direction of the stepper motor rotor.
We can still vary the pumped flow by varying the speed of the movement of the piston member by electronically controlling the pitch frequency of the step-by-step engine.
a speed profile asymmetrical back-and-forth movement by controlling, by means of electronic control, the movement in one direction of rotation with a frequency of step different from the frequency in the other direction of rotation.
a asymmetric displacement profile can be very advantageous to optimize aspiration and expulsion of the liquid by the piston according to the characteristics of the pump and hydraulic system, for example, for avoid cavitation during suction or shock or vibration during expulsion.
stepper motor not only has the advantage of enable a very reliable and precise electronic control of the amplitude and of the frequency according to a desired speed profile, but also to generate a high torque at relatively low rotational speeds.
the electronic engine control can be done through a low noise motor driver to avoid the known resonances of stepper motors as well as optimize efficiency of the motor.
We can reduce its heating by varying the current according to the operating state, for example by switching off the power at reducing the current during the suction cycle of the pump in case of low pressure and providing a high or nominal current during the cycle expulsion of the pump in a situation of high hydraulic pressure.
the reducing device makes it possible to reduce the bulk of the engine while improving the rotor acceleration and deceleration ramps, as well as the positioning accuracy of the cam member, and consequently the amplitude and the displacement frequency of the piston member.
the reducing device also makes it possible to absorb shocks, in particular during changes of direction.
the output axis 13 of the reducing device is provided with a bearing under form of a needle bearing 21 with a small footprint.
the element of complementary cam 15 of the piston member 7 is also mounted on a bearing in the form of a needle bearing 22 to reduce friction between the cam surface 20 and this piece. It should be noted that the element of complementary cam 15 has a diameter slightly less than the distance radial separating the surfaces of the opposite cams 20c, 20d, this weak game to avoid friction of the complementary cam element against the cam surface opposite to the engaging cam surface.
a cam system it is also possible to transform the rotary motion at the outlet of the reducing device by a connecting rod system, that is to say where the piston member is interconnected to a solid disc of the output axis of the reducing device, by a coupled joint so pivoting to the disc and the piston member.
the piston does not need to translate pure, from the moment when there is a moving component in one direction perpendicular to the general plane of the membrane in order to vary the volume pump.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Reciprocating Pumps (AREA)
Transmission Devices (AREA)
Valve Device For Special Equipments (AREA)
Seal Device For Vehicle (AREA)

EP04405346A 2004-04-06 2004-06-04 Pumpenantrieb Expired - Lifetime EP1602826B1 (de)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
DE602004007247T DE602004007247T2 (de)	2004-06-04	2004-06-04	Pumpenantrieb
EP04405346A EP1602826B1 (de)	2004-06-04	2004-06-04	Pumpenantrieb
AT04405346T ATE365868T1 (de)	2004-06-04	2004-06-04	Pumpenantrieb
US11/139,911 US20050244276A1 (en)	2004-04-06	2005-05-27	Pump drive

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP04405346A EP1602826B1 (de)	2004-06-04	2004-06-04	Pumpenantrieb

Publications (2)

Publication Number	Publication Date
EP1602826A1 true EP1602826A1 (de)	2005-12-07
EP1602826B1 EP1602826B1 (de)	2007-06-27

Family

ID=34932133

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP04405346A Expired - Lifetime EP1602826B1 (de)	2004-04-06	2004-06-04	Pumpenantrieb

Country Status (4)

Country	Link
US (1)	US20050244276A1 (de)
EP (1)	EP1602826B1 (de)
AT (1)	ATE365868T1 (de)
DE (1)	DE602004007247T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8172546B2 (en)	1998-11-23	2012-05-08	Entegris, Inc.	System and method for correcting for pressure variations using a motor
WO2006057957A2 (en)	2004-11-23	2006-06-01	Entegris, Inc.	System and method for a variable home position dispense system
JP5339914B2 (ja)	2005-11-21	2013-11-13	インテグリス・インコーポレーテッド	低減された形状要因を有するポンプのためのシステムと方法
KR101283259B1 (ko) *	2005-11-21	2013-07-11	엔테그리스, 아이엔씨.	펌프에 있어서 기계식 피스톤의 위치 제어를 위한 시스템 및 방법
US8753097B2 (en)	2005-11-21	2014-06-17	Entegris, Inc.	Method and system for high viscosity pump
US8083498B2 (en)	2005-12-02	2011-12-27	Entegris, Inc.	System and method for position control of a mechanical piston in a pump
US7878765B2 (en)	2005-12-02	2011-02-01	Entegris, Inc.	System and method for monitoring operation of a pump
JP5366555B2 (ja)	2005-12-02	2013-12-11	インテグリス・インコーポレーテッド	ポンプ内の圧力補償のためのシステムおよび方法
TWI402423B (zh)	2006-02-28	2013-07-21	Entegris Inc	用於一幫浦操作之系統及方法
US8097990B2 (en) *	2010-02-18	2012-01-17	Oscilla Power Inc.	Electrical generator that utilizes rotational to linear motion conversion
TWI678303B (zh) *	2018-09-26	2019-12-01	宏碁股份有限公司	煞車系統
US11698059B2 (en) *	2018-12-29	2023-07-11	Biosense Webster (Israel) Ltd.	Disposable dual-action reciprocating pump assembly
CN110285052A (zh) *	2019-08-07	2019-09-27	东莞吉研达自动化设备科技有限公司	一种智能变量泵
CN113562385B (zh) *	2020-04-29	2023-06-13	亚泰半导体设备股份有限公司	抽液***

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4566868A (en) *	1980-09-17	1986-01-28	Geotechnical Digital Systems Limited	Pressure source
US4643649A (en) *	1984-07-20	1987-02-17	The Perkin-Elmer Corporation	Digital control for rapid refill of a liquid chromatograph pump
US4925371A (en) *	1987-12-17	1990-05-15	Dosapro Milton Roy	Flow rate control for a variable stroke pump
US4930991A (en) *	1988-02-10	1990-06-05	Gilson Medical Electronics (France)	Piston pump for high performance liquid chromatography
DE19849785C1 (de) *	1998-10-28	2000-03-16	Ott Kg Lewa	Verfahren und Vorrichtung zur Förderstromeinstellung bei oszillierenden Verdrängerpumpen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2461126A1 (fr) *	1978-12-15	1981-01-30	Gilson Medical Electronic Fran	Pompe a piston a debit reglable precisement
JP4465117B2 (ja) *	1998-11-12	2010-05-19	パナソニック株式会社	ステッピングモータの制御装置
US6742441B1 (en) *	2002-12-05	2004-06-01	Halliburton Energy Services, Inc.	Continuously variable displacement pump with predefined unswept volume

2004
- 2004-06-04 DE DE602004007247T patent/DE602004007247T2/de not_active Expired - Lifetime
- 2004-06-04 EP EP04405346A patent/EP1602826B1/de not_active Expired - Lifetime
- 2004-06-04 AT AT04405346T patent/ATE365868T1/de not_active IP Right Cessation
2005
- 2005-05-27 US US11/139,911 patent/US20050244276A1/en not_active Abandoned

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4566868A (en) *	1980-09-17	1986-01-28	Geotechnical Digital Systems Limited	Pressure source
US4643649A (en) *	1984-07-20	1987-02-17	The Perkin-Elmer Corporation	Digital control for rapid refill of a liquid chromatograph pump
US4925371A (en) *	1987-12-17	1990-05-15	Dosapro Milton Roy	Flow rate control for a variable stroke pump
US4930991A (en) *	1988-02-10	1990-06-05	Gilson Medical Electronics (France)	Piston pump for high performance liquid chromatography
DE19849785C1 (de) *	1998-10-28	2000-03-16	Ott Kg Lewa	Verfahren und Vorrichtung zur Förderstromeinstellung bei oszillierenden Verdrängerpumpen

Also Published As

Publication number	Publication date
EP1602826B1 (de)	2007-06-27
ATE365868T1 (de)	2007-07-15
DE602004007247D1 (de)	2007-08-09
US20050244276A1 (en)	2005-11-03
DE602004007247T2 (de)	2008-02-28

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Publication	Publication Date	Title
EP1602826B1 (de)	2007-06-27	Pumpenantrieb
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