GB1339807A - Method for the minimization of the effects of pulsations in intermittent pumping systems - Google Patents

Method for the minimization of the effects of pulsations in intermittent pumping systems

Info

Publication number
GB1339807A
GB1339807A GB3996071A GB3996071A GB1339807A GB 1339807 A GB1339807 A GB 1339807A GB 3996071 A GB3996071 A GB 3996071A GB 3996071 A GB3996071 A GB 3996071A GB 1339807 A GB1339807 A GB 1339807A
Authority
GB
United Kingdom
Prior art keywords
sample
tube
segments
pump
wash liquid
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.)
Expired
Application number
GB3996071A
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.)
Bayer Corp
Original Assignee
Technicon Instruments Corp
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 Technicon Instruments Corp filed Critical Technicon Instruments Corp
Publication of GB1339807A publication Critical patent/GB1339807A/en
Expired legal-status Critical Current

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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1223—Machines, pumps, or pumping installations having flexible working members having peristaltic action the actuating elements, e.g. rollers, moving in a straight line during squeezing
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
    • F04B11/0075—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons connected in series
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/08—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a stream of discrete samples flowing along a tube system, e.g. flow injection analysis

Abstract

1339807 Mixing liquids; automatic analysis TECHNICON INSTRUMENTS CORP 25 Aug 1971 [14 Sept 1970] 39960/71 Headings B1C and B1X [Also in Division B8] In apparatus primarily for the colorimetric analysis of blood serum samples, a peristaltic pump 10 is associated with a sampling dip tube 20, an indexing turntable carrying sample containers 16, and a wash liquid container 24, which produce a flow of segments of sample liquid S and wash liquid W separated by air segment A. The pulsations caused by occlusion of the pump tube 36 by the roller 50B will travel along the tube to cause irregularity at the dip tube inlet. This may be arranged to occur at the stage when it causes least disturbance (which is during the intake of the sample which is large in comparison with the wash liquid and air segments) by arranging the flow path to be of suitable length or, as described, by suitable synchronisation of the pump with the dip tube movements. The sample segments are arranged to arrive at the junction 90 simultaneously with reagent segments from the tube 88. The pulsations caused by the roller 50A ceasing to occlude the pump tube are arranged to arrive at the junction 90 simultaneously with an air segment by suitably adjusting the length of the flow path. This minimises change in the sample/reagent proportions or at least restricts any change to the beginning or end part of the sample portion where it is least likely to affect accuracy of colorimetry.
GB3996071A 1970-09-14 1971-08-25 Method for the minimization of the effects of pulsations in intermittent pumping systems Expired GB1339807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7177770A 1970-09-14 1970-09-14

Publications (1)

Publication Number Publication Date
GB1339807A true GB1339807A (en) 1973-12-05

Family

ID=22103521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3996071A Expired GB1339807A (en) 1970-09-14 1971-08-25 Method for the minimization of the effects of pulsations in intermittent pumping systems

Country Status (11)

Country Link
US (1) US3628891A (en)
AU (1) AU445535B2 (en)
BE (1) BE771322A (en)
CA (1) CA938194A (en)
CH (1) CH534304A (en)
DE (1) DE2144122C3 (en)
FR (1) FR2107509A5 (en)
GB (1) GB1339807A (en)
IT (1) IT938777B (en)
NL (1) NL7111946A (en)
SE (1) SE371863B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS162875B1 (en) * 1970-12-23 1975-07-15
US4100797A (en) * 1977-01-17 1978-07-18 Technicon Instruments Corporation Non-invasive method and apparatus for instantaneous flow measurement of a segmented fluid stream
US4218197A (en) * 1978-07-06 1980-08-19 Beckman Instruments, Inc. Combined peristaltic pump and valve flow controller
US4300906A (en) * 1980-10-06 1981-11-17 Technicon Instruments Corp. Method for the operation of automated analysis apparatus
FR2581133B1 (en) * 1985-04-30 1987-07-24 Vidal Lucien LINEAR PERISTALTIC PUMP FOR VEHICLE OF CONCRETE OR OTHER
WO1989000698A1 (en) * 1985-11-08 1989-01-26 Wessex Instrumentation Ltd. Continuous flow analysis
DE8810455U1 (en) * 1988-08-18 1988-09-29 Hoechst Ag, 6230 Frankfurt, De
US20060228240A1 (en) * 2005-03-30 2006-10-12 Lancer Partnership, Ltd. Method and apparatus for a linear peristaltic pump
NL2000058C2 (en) * 2006-04-21 2007-10-23 Bredel Hose Pumps B V Peristaltic pump.
EP2184492B1 (en) * 2008-11-05 2011-12-21 Roche Diagnostics GmbH Method for controlling a peristaltic pump
US8241018B2 (en) * 2009-09-10 2012-08-14 Tyco Healthcare Group Lp Compact peristaltic medical pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL113309C (en) * 1961-10-20
US3588281A (en) * 1969-07-24 1971-06-28 Technicon Corp Method and apparatus for the pumping of fluids at substantially constant flow rate

Also Published As

Publication number Publication date
US3628891A (en) 1971-12-21
CH534304A (en) 1973-02-28
AU3253471A (en) 1973-02-22
CA938194A (en) 1973-12-11
DE2144122A1 (en) 1972-03-23
FR2107509A5 (en) 1972-05-05
SE371863B (en) 1974-12-02
AU445535B2 (en) 1974-02-21
IT938777B (en) 1973-02-10
BE771322A (en) 1972-02-14
NL7111946A (en) 1972-03-16
DE2144122C3 (en) 1974-06-20
DE2144122B2 (en) 1973-09-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees