US20090097998A1 - Fixed Displacement Pump - Google Patents
Fixed Displacement Pump Download PDFInfo
- Publication number
- US20090097998A1 US20090097998A1 US11/869,759 US86975907A US2009097998A1 US 20090097998 A1 US20090097998 A1 US 20090097998A1 US 86975907 A US86975907 A US 86975907A US 2009097998 A1 US2009097998 A1 US 2009097998A1
- Authority
- US
- United States
- Prior art keywords
- chamber
- piston
- collar
- fixed displacement
- pump
- Prior art date
- 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.)
- Abandoned
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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
- 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.”
- these fluids preferably should be metered in a relatively inexpensive pump that may be easy to install, use, and repair.
- 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.
- the application further describes a fixed displacement solenoid pump.
- the fixed displacement solenoid pump may include a chamber, a piston positioned within the chamber, a piston spring attached to the piston, and a collar positioned within the chamber to as to limit movement of the piston within the chamber.
- the fixed displacement solenoid pump further may include an electric coil surrounding the chamber.
- the collar may be positioned outside of the piston spring or inside of the piston spring.
- the collar may be 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.
- 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 .
- 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, Conn., Valcor Engineering Corp., of Springfield, N.J., Bio-Chem Valve of Boonton, N.J., and others.
- FIG. 1 shows a variable displacement solenoid pump offered by ULKA 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 control the flow rate into the pump 10 .
- 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 110 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 110 limits the travel of the piston 40 within the piston chamber 35 .
- Other configurations may be used herein.
- the outside collar 110 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 limits 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 110 and the number of strokes of the piston 40 .
- the outside collar 110 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 110 , 130 or the collars 110 , 130 may be original equipment.
- the length of the collars 110 , 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 110 , 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)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/869,759 US20090097998A1 (en) | 2007-10-10 | 2007-10-10 | Fixed Displacement Pump |
PCT/US2008/077307 WO2009048733A2 (fr) | 2007-10-10 | 2008-09-23 | Pompe à déplacement fixe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/869,759 US20090097998A1 (en) | 2007-10-10 | 2007-10-10 | Fixed Displacement Pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090097998A1 true US20090097998A1 (en) | 2009-04-16 |
Family
ID=40534401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/869,759 Abandoned US20090097998A1 (en) | 2007-10-10 | 2007-10-10 | Fixed Displacement Pump |
Country Status (2)
Country | Link |
---|---|
US (1) | US20090097998A1 (fr) |
WO (1) | WO2009048733A2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090242584A1 (en) * | 2008-04-01 | 2009-10-01 | Nestec S.A. | Beverage dispensing apparatus and method |
CN105822536A (zh) * | 2016-04-20 | 2016-08-03 | 宁波明和力盛液压科技有限公司 | 一种柱塞泵的自控式二次变量控制结构 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3601509A (en) * | 1969-08-11 | 1971-08-24 | Valcor Eng Corp | Electromagnetic pump |
US5284425A (en) * | 1992-11-18 | 1994-02-08 | The Lee Company | Fluid metering pump |
US5320499A (en) * | 1991-09-12 | 1994-06-14 | Vickers Systems Limited | Open-loop hydraulic supply system |
US6382929B1 (en) * | 1998-06-17 | 2002-05-07 | Ulka Srl | Valve combination for vibration pumps |
US6470992B2 (en) * | 2001-04-03 | 2002-10-29 | Visteon Global Technologies, Inc. | Auxiliary solenoid controlled variable displacement power steering pump |
US6554588B1 (en) * | 1999-04-09 | 2003-04-29 | Ulka Srl | Composite piston for a vibration 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 |
US20070272317A1 (en) * | 2004-07-09 | 2007-11-29 | Nestec S.A. | System and Device For Preparing and Delivering Food Products From a Mixture Made Up of a Food Liquid and a Diluent |
US7337920B2 (en) * | 2004-04-23 | 2008-03-04 | A.C. Dispensing Equipment, Inc. | Fluid dispensing apparatus |
US20080287874A1 (en) * | 2007-05-18 | 2008-11-20 | Medtronic, Inc. | Controlling dead volume of a piston pump using an adjustment screw |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999063217A1 (fr) * | 1998-06-04 | 1999-12-09 | Wolfgang Heimberg | Dispositif de pompage |
-
2007
- 2007-10-10 US US11/869,759 patent/US20090097998A1/en not_active Abandoned
-
2008
- 2008-09-23 WO PCT/US2008/077307 patent/WO2009048733A2/fr active Application Filing
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3601509A (en) * | 1969-08-11 | 1971-08-24 | Valcor Eng Corp | Electromagnetic pump |
US5320499A (en) * | 1991-09-12 | 1994-06-14 | Vickers Systems Limited | Open-loop hydraulic supply system |
US5284425A (en) * | 1992-11-18 | 1994-02-08 | The Lee Company | Fluid metering pump |
US6382929B1 (en) * | 1998-06-17 | 2002-05-07 | Ulka Srl | Valve combination for vibration pumps |
US6554588B1 (en) * | 1999-04-09 | 2003-04-29 | Ulka Srl | Composite piston for a 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 |
US6913446B2 (en) * | 2001-04-03 | 2005-07-05 | Visteon Global Technologies, Inc. | Method for improving the efficiency of a variable displacement pump |
US7337920B2 (en) * | 2004-04-23 | 2008-03-04 | A.C. Dispensing Equipment, Inc. | Fluid dispensing apparatus |
US20070272317A1 (en) * | 2004-07-09 | 2007-11-29 | Nestec S.A. | System and Device For Preparing and Delivering Food Products From a Mixture Made Up of a Food Liquid and a Diluent |
US20080287874A1 (en) * | 2007-05-18 | 2008-11-20 | Medtronic, Inc. | Controlling dead volume of a piston pump using an adjustment screw |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090242584A1 (en) * | 2008-04-01 | 2009-10-01 | Nestec S.A. | Beverage dispensing apparatus and method |
CN105822536A (zh) * | 2016-04-20 | 2016-08-03 | 宁波明和力盛液压科技有限公司 | 一种柱塞泵的自控式二次变量控制结构 |
Also Published As
Publication number | Publication date |
---|---|
WO2009048733A3 (fr) | 2009-07-02 |
WO2009048733A2 (fr) | 2009-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: THE COCA-COLA COMPANY, GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUGHES, ROBERT;REEL/FRAME:019937/0091 Effective date: 20071008 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |