WO1999013299A3 - Liquid level sensor - Google Patents

Liquid level sensor Download PDF

Info

Publication number
WO1999013299A3
WO1999013299A3 PCT/US1998/014693 US9814693W WO9913299A3 WO 1999013299 A3 WO1999013299 A3 WO 1999013299A3 US 9814693 W US9814693 W US 9814693W WO 9913299 A3 WO9913299 A3 WO 9913299A3
Authority
WO
WIPO (PCT)
Prior art keywords
transitions
liquid level
level sensor
circuitry
issuing
Prior art date
Application number
PCT/US1998/014693
Other languages
French (fr)
Other versions
WO1999013299A2 (en
Inventor
Ronald W Okoren
Ali S Ameen
Matthew A Shepeck
Original Assignee
American Standard Inc
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 American Standard Inc filed Critical American Standard Inc
Priority to AU84071/98A priority Critical patent/AU8407198A/en
Priority to CA002300079A priority patent/CA2300079C/en
Priority to JP2000511038A priority patent/JP4056698B2/en
Priority to EP98934583A priority patent/EP1009979B1/en
Publication of WO1999013299A2 publication Critical patent/WO1999013299A2/en
Publication of WO1999013299A3 publication Critical patent/WO1999013299A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0207—Lubrication with lubrication control systems
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0215—Lubrication characterised by the use of a special lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/74—Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
    • 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
    • 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
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/08—Pressure difference over a throttle
    • 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
    • F04B2207/00—External parameters
    • F04B2207/03—External temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2230/00—Signal processing
    • F16N2230/18—Switches
    • F16N2230/19—Photo sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2260/00—Fail safe
    • F16N2260/02—Indicating
    • F16N2260/04—Oil level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
    • F25B1/047—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/03—Oil level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/04—Refrigerant level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements

Abstract

A sensor system. The system comprises a binary sensor issuing a signal representative of a first or second condition; sampling circuitry, operatively connected to the binary sensor, for monitoring the number of transitions between the first and second conditions during a sampling period; integration circuitry for accumulating the sampled number of transitions over time; and signal generation circuitry for issuing an analog signal representative of the accumulated transitions.
PCT/US1998/014693 1997-09-05 1998-07-16 Liquid level sensor WO1999013299A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU84071/98A AU8407198A (en) 1997-09-05 1998-07-16 Liquid level sensor
CA002300079A CA2300079C (en) 1997-09-05 1998-07-16 Liquid level sensor
JP2000511038A JP4056698B2 (en) 1997-09-05 1998-07-16 Liquid level sensor
EP98934583A EP1009979B1 (en) 1997-09-05 1998-07-16 Liquid level sensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/924,228 1997-09-05
US08/924,228 US6131471A (en) 1997-09-05 1997-09-05 Liquid level sensor

Publications (2)

Publication Number Publication Date
WO1999013299A2 WO1999013299A2 (en) 1999-03-18
WO1999013299A3 true WO1999013299A3 (en) 1999-05-06

Family

ID=25449924

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/014693 WO1999013299A2 (en) 1997-09-05 1998-07-16 Liquid level sensor

Country Status (7)

Country Link
US (2) US6131471A (en)
EP (2) EP1009979B1 (en)
JP (1) JP4056698B2 (en)
CN (2) CN1154839C (en)
AU (1) AU8407198A (en)
CA (1) CA2300079C (en)
WO (1) WO1999013299A2 (en)

Families Citing this family (22)

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Publication number Priority date Publication date Assignee Title
US6216474B1 (en) * 1999-09-27 2001-04-17 Carrier Corporation Part load performance of variable speed screw compressor
JP2002213271A (en) * 2001-01-19 2002-07-31 Mitsubishi Heavy Ind Ltd Gas heat pump type air conditioner
DE10327329A1 (en) * 2003-06-16 2005-01-05 Willy Vogel Aktiengesellschaft Method for monitoring an oil and air lubrication device using a streak sensor
US7677051B2 (en) * 2004-05-18 2010-03-16 Carrier Corporation Compressor lubrication
DE102006008661B4 (en) * 2006-02-24 2008-05-15 Audi Ag Method for measuring the gas content of a liquid
US7596958B2 (en) * 2006-03-20 2009-10-06 Hussmann Corporation Refrigeration system with fiber optic sensing
US7874724B2 (en) * 2007-04-11 2011-01-25 Trane International Inc. Method for sensing the liquid level in a compressor
DE102007043199A1 (en) * 2007-09-11 2009-03-12 Gühring Ohg Test device for a minimum quantity lubrication system and method for testing a minimum quantity lubrication system
US7905099B2 (en) * 2008-05-21 2011-03-15 Justak John F Predictive maintenance method and apparatus for HVACR systems
US8387406B2 (en) * 2008-09-12 2013-03-05 GM Global Technology Operations LLC Refrigerant system oil accumulation removal
ITMI20092082A1 (en) * 2009-11-26 2011-05-27 Dropsa Spa "DEVICE FOR OIL OR Greasy LUBRICATION"
IT1396624B1 (en) * 2009-11-26 2012-12-14 Dropsa Spa MINIMAL LUBRICATION DEVICE
US20110120803A1 (en) * 2009-11-26 2011-05-26 Dropsa S.P.A. Minimal lubrication device
DE102010015150A1 (en) * 2010-04-16 2011-10-20 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Oil level indicator for a screw compressor
WO2012037021A2 (en) * 2010-09-14 2012-03-22 Johnson Controls Technology Company Compressor having an oil management system
FR2994480A1 (en) * 2012-08-08 2014-02-14 Peugeot Citroen Automobiles Sa Device for detection of e.g. water-glycol, in housing of lithium-ion battery of vehicle, has detection unit detecting photons reflected by internal face in pre-defined direction and delivering output signal representative of photons
US9316522B2 (en) * 2012-08-08 2016-04-19 Eaton Corporation Visual indicator with sensor
US9316524B2 (en) 2012-08-08 2016-04-19 Eaton Corporation Visual indicator with sensor
CN106194738A (en) * 2015-05-08 2016-12-07 丹佛斯（天津）有限公司 Supervising device and monitoring method
EP3332179B1 (en) * 2015-08-04 2022-11-09 Carrier Corporation Liquid sensing for refrigerant-lubricated bearings
US11085683B2 (en) * 2018-06-22 2021-08-10 Emerson Climate Technologies Retail Solutions, Inc. Systems and methods for optical detection of refrigeration system abnormalities
US11717781B2 (en) * 2019-04-10 2023-08-08 Conmed Corporation Filter cartridge assembly having fluid management structure

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US4210809A (en) * 1979-03-16 1980-07-01 Technicon Instruments Corporation Method and apparatus for the non-invasive determination of the characteristics of a segmented fluid stream
US4241732A (en) * 1977-11-29 1980-12-30 Aga Aktiebolag Arrangement in respirators using a fluidistor to determine volume of air passed to a patient and pressure sensor to correct volume reading in terms of actual pressure
EP0394085A1 (en) * 1989-04-17 1990-10-24 Societe De Prospection Electrique Schlumberger Method and device for measurement of multiphase flow, especially in oilwells
EP0460432A2 (en) * 1990-05-29 1991-12-11 AC & R COMPONENTS, INC. Oil level control system

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US4241732A (en) * 1977-11-29 1980-12-30 Aga Aktiebolag Arrangement in respirators using a fluidistor to determine volume of air passed to a patient and pressure sensor to correct volume reading in terms of actual pressure
US4210809A (en) * 1979-03-16 1980-07-01 Technicon Instruments Corporation Method and apparatus for the non-invasive determination of the characteristics of a segmented fluid stream
EP0394085A1 (en) * 1989-04-17 1990-10-24 Societe De Prospection Electrique Schlumberger Method and device for measurement of multiphase flow, especially in oilwells
EP0460432A2 (en) * 1990-05-29 1991-12-11 AC & R COMPONENTS, INC. Oil level control system

Also Published As

Publication number Publication date
EP1400788A8 (en) 2004-05-26
CN1269880A (en) 2000-10-11
JP4056698B2 (en) 2008-03-05
WO1999013299A2 (en) 1999-03-18
CN1239890C (en) 2006-02-01
AU8407198A (en) 1999-03-29
EP1009979A2 (en) 2000-06-21
JP2001516045A (en) 2001-09-25
CN1425902A (en) 2003-06-25
EP1400788B1 (en) 2006-02-01
CN1154839C (en) 2004-06-23
US6161395A (en) 2000-12-19
EP1400788A1 (en) 2004-03-24
US6131471A (en) 2000-10-17
CA2300079A1 (en) 1999-03-18
EP1009979B1 (en) 2006-03-08
CA2300079C (en) 2003-01-21

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