WO2009048733A2 - Fixed displacement pump - Google Patents
Fixed displacement pump Download PDFInfo
- Publication number
- WO2009048733A2 WO2009048733A2 PCT/US2008/077307 US2008077307W WO2009048733A2 WO 2009048733 A2 WO2009048733 A2 WO 2009048733A2 US 2008077307 W US2008077307 W US 2008077307W WO 2009048733 A2 WO2009048733 A2 WO 2009048733A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- chamber
- collar
- fixed displacement
- displacement pump
- Prior art date
Links
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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
- F04B49/14—Adjusting abutments located in the path of reciprocation
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
Definitions
- the present application relates generally to beverage dispenser components and more particularly relates to a fixed displacement solenoid pump for use within a beverage dispenser or in other types of fluid transport devices and systems.
- Variable displacement solenoid pumps are widely used in beverage dispensers and in the beverage industry in general. These pumps generally have a hydraulic flow rate depending on the fluid to be pumped, the working pressure, and the electromagnetic temperature. The working pressure may vary according to the resistance opposed to the pumping system. These pumps are in wide use in the industry because they generally have small dimensions, low price, and low operating costs.
- a beverage may include a number of micro-ingredients, a number of macro-ingredients, and a number of diluents.
- the micro-ingredients may have a reconstitution ratio of about ten (10) to one (1) or more, and in many cases, even one hundred (100) to one (1) or more. See, e.g., commonly owned U.S. Patent Publication No. 2007/0205221 entitled “Beverage Dispensing System” and U.S. Patent Publication No. 2007/0205220 entitled “Juice Dispensing System.”
- the present application thus provides a fixed displacement pump.
- the fixed displacement pump may include a chamber, a piston positioned within the chamber, and a collar positioned within the chamber to as to limit movement of the piston within the chamber.
- the fixed displacement pump further may include an electric coil surrounding the chamber and a piston spring attached to the piston.
- the collar may be positioned outside of the piston spring or inside of the piston spring.
- the collar may integral with the chamber or nonintegral with the chamber.
- the collar may include a predetermined length.
- the fixed displacement pump further may include a number of collars with varying lengths.
- the application further describes a method of retrofitting a variable displacement pump having a chamber and a piston therein.
- the method may include positioning a collar within the chamber, limiting the extent of a stroke of the piston within the chamber by the collar, and operating the pump as a fixed displacement pump.
- the method further may include determining a desired length of the stroke of the piston.
- the step of positioning the collar may include positioning a collar of a predetermined length.
- Fig. 1 is a side cross-sectional view of a known variable displacement solenoid pump.
- Fig. 2 is a side cross-sectional view of a fixed displacement solenoid pump as is described herein.
- Fig, 3 is a side cross-sectional view of an alternative embodiment of a fixed displacement solenoid pump as is described herein.
- Fig. 1 shows a known variable displacement solenoid pump 10.
- Fig. 1 shows a variable displacement solenoid pump 10.
- Fig. 1 shows a variable displacement solenoid pump offered by LiLKA S.r.L. under the designation * 'NME Evolution Micropump.”
- variable displacement pump 10 may include an upper connection 15.
- the upper connection 15 may be in communication with an ingredient line, a diluent line, or any other fluid source.
- Positioned within or about the upper connection 15 may be an upper spring 20 and an upper valve 25.
- the upper valve 25 may be in communication with a piston valve 30 positioned about a piston chamber 35.
- a piston 40 may be positioned within the piston chamber 35.
- the piston 40 may be made of a magnetizeable material.
- the piston 40 may be in contact with one or more piston springs 45.
- the piston chamber 35 may be surrounded by a magnetic structure 50.
- the magnetic structure 50 may include an electronic coil 55. Activation of the electronic coil 55 causes the piston 40 to move within the piston chamber 35 via magnetic attraction or repulsion with the magnetic structure 50.
- the piston chamber 35 in turn leads to a lower connection 60.
- the lower connection 60 may be in communication with the components of the beverage dispenser or otherwise.
- Fig. 2 shows a fixed displacement solenoid pump 100 as is described herein.
- the fixed displacement solenoid pump 100 may be largely identical or similar to the variable displacement solenoid pump 10 described above, but with the addition of an outside collar 110 positioned within the piston chamber 35.
- the outside collar 1 10 may be a separate element that is positioned outside of the piston springs 45 or the outside collar 110 may be an extension of the piston chamber 35 itself.
- the outside collar 1 10 limits the travel of the piston 40 within the piston chamber 35.
- Other configurations may be used herein.
- the outside collar 1 10 may have a predetermined length so define the extent of travel of the piston 40 within the piston chamber 35.
- the term "collar" is used, any structure that iimits the travel of the piston 40 is within the intended scope of the term.
- the outside collar 110 generally may be made of a non-magnetizeable material.
- the displacement of the pump 100 as a whole is constant.
- the output of the pump 100 is a function of the displacement within the piston chamber 35 as limited by the outside collar 1 10 and the number of strokes of the piston 40.
- the outside collar 1 10 thus turns the variable displacement solenoid pump 10 into the fixed displacement solenoid pump 100.
- the fixed displacement solenoid pump 100 may operate as an open loop metering pump.
- Fig. 3 shows an alternative embodiment of a fixed displacement solenoid pump 120
- the fixed displacement solenoid pump 120 includes an inside collar 130.
- the inside collar 130 may be positioned inside the piston springs 45.
- the inside collar 130 may be a separate element or the inside collar 130 may be an extension of the lower connection 60 or otherwise molded into the piston chamber 35 or other elements of the pump 120.
- Other configurations may be used herein.
- the inside collar 130 limits the travel of the piston 40 such that the output of the fixed displacement solenoid pump 120 is a function of the displacement of the piston 40 and the number of piston strokes.
- the fixed displacement solenoid pumps 100, 120 thus accurately and consistently pump small volumes of fluid as needed.
- the pumps 100, 120 can be easily retrofit with the collars 1 10, 130 or the collars 1 10, 130 may be original equipment.
- the length of the collars 1 10, 130 may vary according to the desired displacement per stroke of the piston 40.
- a number of collars 110, 130 with varying lengths may be used.
- the use of the collars 1 10, 130 may be applicable to pumps other than the examples provided above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Reciprocating Pumps (AREA)
Abstract
Fixed displacement pump (100) includes a chamber (35), a piston (40) positioned within the chamber, and a collar (110) positioned within the chamber to as to limit movement of the piston within the chamber.
Description
FIXED DISPLACEMENT PUMP
TECHNICAL FIELD [0101] The present application relates generally to beverage dispenser components and more particularly relates to a fixed displacement solenoid pump for use within a beverage dispenser or in other types of fluid transport devices and systems.
BACKGROUND OF THE INVENTION [0102] Variable displacement solenoid pumps are widely used in beverage dispensers and in the beverage industry in general. These pumps generally have a hydraulic flow rate depending on the fluid to be pumped, the working pressure, and the electromagnetic temperature. The working pressure may vary according to the resistance opposed to the pumping system. These pumps are in wide use in the industry because they generally have small dimensions, low price, and low operating costs.
[0103] The beverage industry, however, is moving towards the use of ever smaller individual beverage components. For example, a beverage may include a number of micro-ingredients, a number of macro-ingredients, and a number of diluents. The micro-ingredients may have a reconstitution ratio of about ten (10) to one (1) or more, and in many cases, even one hundred (100) to one (1) or more. See, e.g., commonly owned U.S. Patent Publication No. 2007/0205221 entitled "Beverage Dispensing System" and U.S. Patent Publication No. 2007/0205220 entitled "Juice Dispensing System."
[0104] As a result of the use of these ever smaller components, there is a desire to meter accurately these small amounts of fluids in a consistent and repeatable fashion. Likewise, these fluids preferably should be metered in a relatively inexpensive pump that may be easy to install, use, and repair.
SUMMARY OF THE INVENTION [0105] The present application thus provides a fixed displacement pump. The fixed displacement pump may include a chamber, a piston positioned within the
chamber, and a collar positioned within the chamber to as to limit movement of the piston within the chamber.
[0106] The fixed displacement pump further may include an electric coil surrounding the chamber and a piston spring attached to the piston. The collar may be positioned outside of the piston spring or inside of the piston spring. The collar may integral with the chamber or nonintegral with the chamber. The collar may include a predetermined length. The fixed displacement pump further may include a number of collars with varying lengths.
[0107] The application further describes a method of retrofitting a variable displacement pump having a chamber and a piston therein. The method may include positioning a collar within the chamber, limiting the extent of a stroke of the piston within the chamber by the collar, and operating the pump as a fixed displacement pump.
[0108] The method further may include determining a desired length of the stroke of the piston. The step of positioning the collar may include positioning a collar of a predetermined length.
BRIEF DESCRIPTION OF THE DRAWINGS
[0109] Fig. 1 is a side cross-sectional view of a known variable displacement solenoid pump. [0110] Fig. 2 is a side cross-sectional view of a fixed displacement solenoid pump as is described herein.
[0111] Fig, 3 is a side cross-sectional view of an alternative embodiment of a fixed displacement solenoid pump as is described herein.
DETAILED DESCRIPTION
[0112] Referring now to the drawings in which like numerals refer to like elements among the several views, Fig. 1 shows a known variable displacement solenoid pump 10. As is described above, several variable displacement solenoid pumps are known in the beverage dispenser industry and elsewhere. These known pumps include pumps sold by ULKA S.r.L. of Pavia, Italy, the Lee Company of Westbrook, Connecticut, Valcor Engineering Corp., of Springfield, New Jersey, Bio-Chem Valve of
Boonton, New Jersey, and others. Fig. 1 shows a variable displacement solenoid pump offered by LiLKA S.r.L. under the designation *'NME Evolution Micropump."
[0113] Generally described, the variable displacement pump 10 may include an upper connection 15. The upper connection 15 may be in communication with an ingredient line, a diluent line, or any other fluid source. Positioned within or about the upper connection 15 may be an upper spring 20 and an upper valve 25. The upper valve
25 may control the flow rate into the pump 10.
[0114] The upper valve 25 may be in communication with a piston valve 30 positioned about a piston chamber 35. A piston 40 may be positioned within the piston chamber 35. The piston 40 may be made of a magnetizeable material. The piston 40 may be in contact with one or more piston springs 45. The piston chamber 35 may be surrounded by a magnetic structure 50. The magnetic structure 50 may include an electronic coil 55. Activation of the electronic coil 55 causes the piston 40 to move within the piston chamber 35 via magnetic attraction or repulsion with the magnetic structure 50.
[0115] The piston chamber 35 in turn leads to a lower connection 60. The lower connection 60 may be in communication with the components of the beverage dispenser or otherwise.
[0116] As is well known, activation of the magnetic structure 50 and the electronic coil 55 causes the piston 40 to maneuver along the piston chamber 35. Once the magnetic structure 50 and the electronic coil 55 are turned off, the piston springs 45 return to the piston 40 in the opposite direction. As such, the interaction of the piston 40, the magnetic structure 50, the electronic coil 55, and the springs 45 may create a pumping action so as to pump fluid from a fluid source to a desired destination. Similar types of solenoid pumps 10 and/or other pumps are known in the art and may be used herein.
[0117] Fig. 2 shows a fixed displacement solenoid pump 100 as is described herein. The fixed displacement solenoid pump 100 may be largely identical or similar to the variable displacement solenoid pump 10 described above, but with the addition of an outside collar 110 positioned within the piston chamber 35. The outside collar 1 10 may be a separate element that is positioned outside of the piston springs 45 or the outside collar 110 may be an extension of the piston chamber 35 itself. The outside collar 1 10
limits the travel of the piston 40 within the piston chamber 35. Other configurations may be used herein. The outside collar 1 10 may have a predetermined length so define the extent of travel of the piston 40 within the piston chamber 35. Although the term "collar" is used, any structure that iimits the travel of the piston 40 is within the intended scope of the term. The outside collar 110 generally may be made of a non-magnetizeable material.
[0118] As a result of the use of the collar 1 10. the displacement of the pump 100 as a whole is constant. Specifically, the output of the pump 100 is a function of the displacement within the piston chamber 35 as limited by the outside collar 1 10 and the number of strokes of the piston 40. The outside collar 1 10 thus turns the variable displacement solenoid pump 10 into the fixed displacement solenoid pump 100. As such, the fixed displacement solenoid pump 100 may operate as an open loop metering pump.
[0119] Fig. 3 shows an alternative embodiment of a fixed displacement solenoid pump 120, In this embodiment, the fixed displacement solenoid pump 120 includes an inside collar 130. The inside collar 130 may be positioned inside the piston springs 45. The inside collar 130 may be a separate element or the inside collar 130 may be an extension of the lower connection 60 or otherwise molded into the piston chamber 35 or other elements of the pump 120. Other configurations may be used herein. Again, the inside collar 130 limits the travel of the piston 40 such that the output of the fixed displacement solenoid pump 120 is a function of the displacement of the piston 40 and the number of piston strokes.
[0120J The fixed displacement solenoid pumps 100, 120 thus accurately and consistently pump small volumes of fluid as needed. The pumps 100, 120 can be easily retrofit with the collars 1 10, 130 or the collars 1 10, 130 may be original equipment. The length of the collars 1 10, 130 may vary according to the desired displacement per stroke of the piston 40. A number of collars 110, 130 with varying lengths may be used. The use of the collars 1 10, 130 may be applicable to pumps other than the examples provided above.
Claims
I claim:
L A fixed displacement pump, comprising: a chamber; a piston positioned within the chamber; and a collar positioned within the chamber to as to limit movement of the piston within the chamber.
2. The fixed displacement pump of claim 1, further comprising an electric coil surrounding the chamber.
3. The fixed displacement pump of claim 1, further comprising a piston spring in contact with the piston.
4. The fixed displacement pump of claim 3, wherein the collar is positioned outside of the piston spring.
5. The Fixed displacement pump of claim 3, wherein the collar is positioned inside of the piston spring.
6. The fixed displacement pump of claim 1, wherein the collar is integral with the chamber.
7. The fixed displacement pump of claim 1, wherein the collar is nonintegral with the chamber.
8. The fixed displacement pump of claim 1, wherein the collar comprises a predetermined length.
9. The fixed displacement pump of claim 1, further comprising a plurality of collars with varying lengths.
10. A method of retrofitting a variable displacement pump having a chamber and a piston therein, comprising: positioning a collar within the chamber; limiting the extent of a stroke of the piston within the chamber by the collar: and operating the pump as a fixed displacement pump.
1 1. The method of claim 10, further comprising determining a desired length of the stroke of the piston.
12. The method of claim 1 1, wherein the step of positioning the collar comprises positioning a collar of a predetermined length.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/869,759 | 2007-10-10 | ||
US11/869,759 US20090097998A1 (en) | 2007-10-10 | 2007-10-10 | Fixed Displacement Pump |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009048733A2 true WO2009048733A2 (en) | 2009-04-16 |
WO2009048733A3 WO2009048733A3 (en) | 2009-07-02 |
Family
ID=40534401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/077307 WO2009048733A2 (en) | 2007-10-10 | 2008-09-23 | Fixed displacement pump |
Country Status (2)
Country | Link |
---|---|
US (1) | US20090097998A1 (en) |
WO (1) | WO2009048733A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE539261T1 (en) * | 2008-04-01 | 2012-01-15 | Nestle Sa | BEVERAGE DISPENSER COMPRISING AN ELECTROMAGNETICALLY DRIVEN PUMP AND METHOD FOR CONTROLLING THE PUMP |
CN105822536B (en) * | 2016-04-20 | 2018-09-07 | 宁波明和力盛液压科技有限公司 | A kind of Self-controlling secondary Variable Control structure of plunger pump |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999063217A1 (en) * | 1998-06-04 | 1999-12-09 | Wolfgang Heimberg | Pumping device |
US20080287874A1 (en) * | 2007-05-18 | 2008-11-20 | Medtronic, Inc. | Controlling dead volume of a piston pump using an adjustment screw |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3601509A (en) * | 1969-08-11 | 1971-08-24 | Valcor Eng Corp | Electromagnetic pump |
GB9119448D0 (en) * | 1991-09-12 | 1991-10-23 | Vickers Systems Ltd | System controls |
US5284425A (en) * | 1992-11-18 | 1994-02-08 | The Lee Company | Fluid metering pump |
IT244069Y1 (en) * | 1998-06-17 | 2002-03-07 | Ulka Srl | DEVICE APPLICABLE TO VIBRATION PUMP REALIZING DIAUTOINESCO FUNCTIONS IN CONDITIONS OF COUNTER-PRESSURE COMPENSATION OF |
IT246634Y1 (en) * | 1999-04-09 | 2002-04-09 | Ulka Srl | COMPOSITE PISTON FOR VIBRATION PUMP |
US6470992B2 (en) * | 2001-04-03 | 2002-10-29 | Visteon Global Technologies, Inc. | Auxiliary solenoid controlled variable displacement power steering pump |
US6817438B2 (en) * | 2001-04-03 | 2004-11-16 | Visteon Global Technologies, Inc. | Apparatus and a method for adjusting fluid movement in a variable displacement pump |
US7337920B2 (en) * | 2004-04-23 | 2008-03-04 | A.C. Dispensing Equipment, Inc. | Fluid dispensing apparatus |
JP5065893B2 (en) * | 2004-07-09 | 2012-11-07 | ネステク ソシエテ アノニム | System and apparatus for forming a mixture with liquid and diluent |
-
2007
- 2007-10-10 US US11/869,759 patent/US20090097998A1/en not_active Abandoned
-
2008
- 2008-09-23 WO PCT/US2008/077307 patent/WO2009048733A2/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999063217A1 (en) * | 1998-06-04 | 1999-12-09 | Wolfgang Heimberg | Pumping device |
US20080287874A1 (en) * | 2007-05-18 | 2008-11-20 | Medtronic, Inc. | Controlling dead volume of a piston pump using an adjustment screw |
Also Published As
Publication number | Publication date |
---|---|
WO2009048733A3 (en) | 2009-07-02 |
US20090097998A1 (en) | 2009-04-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8056576B2 (en) | Dual setpoint pressure controlled hydraulic valve | |
CN104047664B (en) | The system and method for Fluid pump outlet pressure adjustment | |
US5605317A (en) | Electro-magnetically operated valve | |
EP2069667B1 (en) | Poppet valve | |
RU2505787C2 (en) | Flow sensor with moving magnet | |
WO2006044468A2 (en) | Multiple port dual diameter pumps | |
EP2535553B1 (en) | Inlet Valve Arrangement for a Fuel Pump | |
JP2001208234A (en) | Solenoid valve | |
CN101900214B (en) | Valve for distributing fluids | |
US20090097998A1 (en) | Fixed Displacement Pump | |
CN103261655A (en) | Voltage compensating piston fuel pump and fuel delivery system therewith | |
EP2069660B1 (en) | Poppet valve orifice | |
US20080226477A1 (en) | Electromagnetic oscillating fluid pump | |
CN101809279A (en) | Variable delivery pump with anti-stiction device | |
CN112243489A (en) | Metering pump with linear motor | |
KR102376121B1 (en) | Reciprocating fluid pumps including magnets, and related assemblies, systems, and methods | |
US6840406B2 (en) | Proportional volumetric injector-dispenser | |
EP3690245B1 (en) | Solenoid pump | |
US20180230992A1 (en) | Linear pumping system and methods for controlling the same | |
MX2008015894A (en) | Pump element and pump comprising such a pump element. | |
WO1991019903A1 (en) | Fluid pumps | |
JP2006002739A (en) | Electromagnetic pump for metering |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08837294 Country of ref document: EP Kind code of ref document: A2 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08837294 Country of ref document: EP Kind code of ref document: A2 |