WO2010109375A3 - Fluid level indicator - Google Patents

Fluid level indicator Download PDF

Info

Publication number
WO2010109375A3
WO2010109375A3 PCT/IB2010/051154 IB2010051154W WO2010109375A3 WO 2010109375 A3 WO2010109375 A3 WO 2010109375A3 IB 2010051154 W IB2010051154 W IB 2010051154W WO 2010109375 A3 WO2010109375 A3 WO 2010109375A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
fluid level
fluid
indicated
receiving
Prior art date
Application number
PCT/IB2010/051154
Other languages
French (fr)
Other versions
WO2010109375A2 (en
Inventor
Timotheus J. M. Van Aken
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2010109375A2 publication Critical patent/WO2010109375A2/en
Publication of WO2010109375A3 publication Critical patent/WO2010109375A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J41/00—Thermally-insulated vessels, e.g. flasks, jugs, jars
    • A47J41/0083—Accessories
    • A47J41/0094—Indicating means, e.g. for level or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2922—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms
    • G01F23/2925—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means
    • G01F23/2927—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means for several discrete levels, e.g. with more than one light-conducting sensing element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2928—Light, e.g. infrared or ultraviolet for discrete levels using light reflected on the material surface
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J2203/00—Devices having filling level indicating means

Abstract

According to one aspect, the invention provides a fluid container with fluid level indicator comprising a light source comprising a light emitting portion and a light transceiving display element. The indicator further comprises a light guide defining a light path to the transceiving display element. The light guide comprises a light receiving portion for receiving light from the light emitting portion. The emitting and receiving portion are distanced by a gap. One of the receiving and emitting portions is positioned at or above the fluid level to be indicated, and the other one is positioned at the fluid level to be indicated, such that when in use the fluid is at the fluid level to be indicated, the fluid fills the gap and prevents light reaching the receiving portion. In one aspect, the invention provides a fluid level indicator without restricting the positioning angle with respect to the fluid surface.
PCT/IB2010/051154 2009-03-23 2010-03-17 Fluid level indicator WO2010109375A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09155869 2009-03-23
EP09155869.2 2009-03-23

Publications (2)

Publication Number Publication Date
WO2010109375A2 WO2010109375A2 (en) 2010-09-30
WO2010109375A3 true WO2010109375A3 (en) 2011-05-05

Family

ID=42606261

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/051154 WO2010109375A2 (en) 2009-03-23 2010-03-17 Fluid level indicator

Country Status (1)

Country Link
WO (1) WO2010109375A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748676B (en) * 2012-07-05 2014-06-04 许继集团有限公司 Indicator light and electric vehicle charging pile with indictor light
WO2014110576A1 (en) * 2013-01-14 2014-07-17 Sunbeam Products, Inc. Hot beverage maker and beverage vessel with beverage level indicator
WO2020003303A2 (en) * 2018-06-28 2020-01-02 Ormetrix Sensing Technologies Ltd System for gauging fluids volume
JP7103643B2 (en) * 2018-12-13 2022-07-20 株式会社インパクト Water level display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2097055A1 (en) * 1970-07-30 1972-03-03 Fink Herbert
US4069838A (en) * 1976-05-26 1978-01-24 Sun Oil Company Of Pennsylvania Fiber optic liquid level sensor
GB2195446A (en) * 1986-09-26 1988-04-07 Philips Electronic Associated A liquid level indicator
US6311547B1 (en) * 1997-12-16 2001-11-06 Tokheim Services France Sensor for detecting leaks in a liquid hydrocarbon dispenser

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050199833A1 (en) 2004-03-15 2005-09-15 David Corven Optical fluid level monitor
US7535571B2 (en) 2006-07-26 2009-05-19 Mitsubishi Electric Research Laboratories, Inc. Optical fluid level encoder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2097055A1 (en) * 1970-07-30 1972-03-03 Fink Herbert
US4069838A (en) * 1976-05-26 1978-01-24 Sun Oil Company Of Pennsylvania Fiber optic liquid level sensor
GB2195446A (en) * 1986-09-26 1988-04-07 Philips Electronic Associated A liquid level indicator
US6311547B1 (en) * 1997-12-16 2001-11-06 Tokheim Services France Sensor for detecting leaks in a liquid hydrocarbon dispenser

Also Published As

Publication number Publication date
WO2010109375A2 (en) 2010-09-30

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