GB1071752A - Ice condition detecting device - Google Patents

Ice condition detecting device

Info

Publication number
GB1071752A
GB1071752A GB28349/64A GB2834964A GB1071752A GB 1071752 A GB1071752 A GB 1071752A GB 28349/64 A GB28349/64 A GB 28349/64A GB 2834964 A GB2834964 A GB 2834964A GB 1071752 A GB1071752 A GB 1071752A
Authority
GB
United Kingdom
Prior art keywords
temperature
sensor
dielectric
heater
free water
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
GB28349/64A
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.)
Holley Performance Products Inc
Original Assignee
Holley Carburetor Co
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 Holley Carburetor Co filed Critical Holley Carburetor Co
Publication of GB1071752A publication Critical patent/GB1071752A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/02—De-icing means for engines having icing phenomena
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/02—Detecting the presence of frost or condensate
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/14—Rainfall or precipitation gauges
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Hydrology & Water Resources (AREA)
  • Ecology (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Pathology (AREA)
  • Environmental Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

1,071,752. Ice-detecting apparatus. HOLLEY CARBURETOR CO. July 9, 1964 [March 30, 1964], No. 28349/64. Heading G1N. A device for preventing the formation of ice on a surface compares the output of a device measuring saturation temperature with that of a device measuring the temperature of the surface and operates a heater when the first exceeds the second provided also that the surface is near to freezing point. The basic system is shown in Fig. 1. An A. C. -fed capacitor (see below) feeds a signal proportional to absolute moisture content and hence to saturation temperature of the air to a gate circuit 24. This circuit is also fed with the output of a surface temperature measuring thermistor 28 which opens the gate only when surface temperature is approaching freezing point. If it is, both outputs are fed after suitable rectification and amplification to a differential amplifier 32 which compares them and, if surface temperature is lower than saturation temperature, operates a relay to switch on a surface heater 62. In an elaboration Fig. 10 (not shown) a further condenser is incorporated which responds to the presence of free water (e.g. rain) and if the surface temperature is near freezing, overrides the saturation temperature measuring device to switch on the heater. This free water sensor may also operate to keep water out of the moisture sensor. The saturation temperature sensor Fig. 2 (not shown) consists of a cylindrical capacitor having outer and inner electrodes 66, 70 between which is sandwiched an intermediate sensitivity grade of polyvinyl alcohol called Elvanol. This material is said to acquire a surface film of moisture which varies the capacitance to give an indication of absolute moisture content. The outer electrode is perforated to allow the moisture to reach the dielectric and a cone 110 guides the air flow into axial passages around the electrode. To maintain the temperature of the detectors above dew point a central heater is provided and a thermistor is embedded in an epoxy resin filled cavity in the inner electrode. In further arrangements. Figs.6-9 (not shown) the inner electrode is also perforated and when no longitudinal air flow is provided the air enters the assembly through the circumferential walls of the housing and an arrangement is also described in which the air flows over flat electrodes plates which are adjustable to and from each other. The entire sensor may be situated in a heated housing Fig. 11 (not shown). Free water sensor this consists of a pair of electrodes with an intermediate dielectric as already described but the electrodes are spaced from the dielectric to allow free water to flow through and the dielectric to dry off.
GB28349/64A 1964-03-30 1964-07-09 Ice condition detecting device Expired GB1071752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US355639A US3287974A (en) 1964-03-30 1964-03-30 Ice condition detection device

Publications (1)

Publication Number Publication Date
GB1071752A true GB1071752A (en) 1967-06-14

Family

ID=23398220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28349/64A Expired GB1071752A (en) 1964-03-30 1964-07-09 Ice condition detecting device

Country Status (4)

Country Link
US (1) US3287974A (en)
CH (1) CH432044A (en)
DE (1) DE1573198A1 (en)
GB (1) GB1071752A (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428890A (en) * 1966-05-23 1969-02-18 Commerce Usa System for determining the type of atmospheric precipitation by detecting meteorological parameters
US3422677A (en) * 1966-06-21 1969-01-21 Holley Carburetor Co Ice condition detecting device
US3540025A (en) * 1967-01-20 1970-11-10 Sierracin Corp Ice detector
US3859502A (en) * 1974-02-11 1975-01-07 Anthony S Mfg Co Defrosting system for refrigerator doors
DE2443224C3 (en) * 1974-09-10 1979-02-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Process for deicing engine, wing and tail unit systems on missiles
JPS58165050A (en) * 1982-03-24 1983-09-30 Murata Mfg Co Ltd Identifying sensor for dryness-dewing and frosting
DE3213241A1 (en) * 1982-04-08 1983-10-13 WTW Wissenschaftlich-technische Werkstätten GmbH, 8120 Weilheim METHOD AND DEVICE FOR CALIBRATING SENSORS
US4662220A (en) * 1985-06-20 1987-05-05 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Water-absorbing capacitor system for measuring relative humidity
JPH0599877A (en) * 1991-06-25 1993-04-23 Yamatake Honeywell Co Ltd Humidity sensing apparatus
FR2702049B1 (en) * 1993-02-24 1995-03-31 Imra Europe Sa Method and device for determining the risk of water condensation on a surface in contact with a volume of humid air.
US5354015A (en) * 1993-08-10 1994-10-11 Meador Robert H System for warning the flight crew on board an aircraft of pre-flight aircraft icing
FI99164C (en) * 1994-04-15 1997-10-10 Vaisala Oy Method for measuring the dew point or gas content and equipment for predicting freezing
US5844138A (en) * 1997-03-07 1998-12-01 Veris Industries, Inc. Humidity sensor
US7014357B2 (en) * 2002-11-19 2006-03-21 Rosemount Aerospace Inc. Thermal icing conditions detector
US7175136B2 (en) 2003-04-16 2007-02-13 The Boeing Company Method and apparatus for detecting conditions conducive to ice formation
ATE445210T1 (en) 2003-08-20 2009-10-15 Boeing Co METHOD AND SYSTEMS FOR DETECTING ICING CONDITIONS
US7230205B2 (en) * 2005-03-29 2007-06-12 Siemens Power Generation, Inc. Compressor airfoil surface wetting and icing detection system
US7331421B2 (en) 2005-03-30 2008-02-19 The Boeing Company Flow restrictors for aircraft inlet acoustic treatments, and associated systems and methods
CA2609629A1 (en) 2007-09-10 2009-03-10 Veris Industries, Llc Current switch with automatic calibration
CA2609619A1 (en) 2007-09-10 2009-03-10 Veris Industries, Llc Status indicator
CA2609611A1 (en) 2007-09-10 2009-03-10 Veris Industries, Llc Split core status indicator
US8212548B2 (en) 2008-06-02 2012-07-03 Veris Industries, Llc Branch meter with configurable sensor strip arrangement
US8421639B2 (en) 2008-11-21 2013-04-16 Veris Industries, Llc Branch current monitor with an alarm
US8421443B2 (en) 2008-11-21 2013-04-16 Veris Industries, Llc Branch current monitor with calibration
US9335352B2 (en) 2009-03-13 2016-05-10 Veris Industries, Llc Branch circuit monitor power measurement
US9146264B2 (en) 2011-02-25 2015-09-29 Veris Industries, Llc Current meter with on board memory
US10006948B2 (en) 2011-02-25 2018-06-26 Veris Industries, Llc Current meter with voltage awareness
US9329996B2 (en) 2011-04-27 2016-05-03 Veris Industries, Llc Branch circuit monitor with paging register
US9250308B2 (en) 2011-06-03 2016-02-02 Veris Industries, Llc Simplified energy meter configuration
US9410552B2 (en) 2011-10-05 2016-08-09 Veris Industries, Llc Current switch with automatic calibration
US9424975B2 (en) 2013-08-23 2016-08-23 Veris Industries, Llc Split core transformer with self-aligning cores
US9607749B2 (en) 2014-01-23 2017-03-28 Veris Industries, Llc Split core current transformer
US9588148B2 (en) 2014-01-23 2017-03-07 Veris Industries, Llc Input circuit for current transformer
US10274572B2 (en) 2015-12-28 2019-04-30 Veris Industries, Llc Calibration system for a power meter
US10371721B2 (en) 2015-12-28 2019-08-06 Veris Industries, Llc Configuration system for a power meter
US10371730B2 (en) 2015-12-28 2019-08-06 Veris Industries, Llc Branch current monitor with client level access
US10408911B2 (en) 2015-12-28 2019-09-10 Veris Industries, Llc Network configurable system for a power meter
US11215650B2 (en) 2017-02-28 2022-01-04 Veris Industries, Llc Phase aligned branch energy meter
US11193958B2 (en) 2017-03-03 2021-12-07 Veris Industries, Llc Non-contact voltage sensor
US10705126B2 (en) 2017-05-19 2020-07-07 Veris Industries, Llc Energy metering with temperature monitoring
CN112856898B (en) * 2019-11-12 2022-07-05 日立环球生活方案株式会社 Refrigerator with a door

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA672385A (en) * 1963-10-15 Kar-Trol Signal Co. Inc. Ice, snow and frost detector
US2717957A (en) * 1951-05-03 1955-09-13 American Instr Co Inc Snow, ice, and sleet sensing device
US2767574A (en) * 1953-06-22 1956-10-23 Edward C Schurch Apparatus for indicating moisture in oil
DK91299C (en) * 1959-09-21 1961-07-10 Danfoss Ved Ingenioer Mads Cla Sensor element for a hygrometer.
US3146617A (en) * 1960-11-25 1964-09-01 Dynair Electronics Inc Moisture measuring system
FR1322873A (en) * 1962-02-09 1963-04-05 Commissariat Energie Atomique Atmospheric fallout collector

Also Published As

Publication number Publication date
US3287974A (en) 1966-11-29
CH432044A (en) 1967-03-15
DE1573198A1 (en) 1970-02-26

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