FR2268257A1 - Electrothermal analogue temperature indicator - shows the temperature of a heating device using liquid crystal display - Google Patents

Electrothermal analogue temperature indicator - shows the temperature of a heating device using liquid crystal display

Info

Publication number
FR2268257A1
FR2268257A1 FR7413965A FR7413965A FR2268257A1 FR 2268257 A1 FR2268257 A1 FR 2268257A1 FR 7413965 A FR7413965 A FR 7413965A FR 7413965 A FR7413965 A FR 7413965A FR 2268257 A1 FR2268257 A1 FR 2268257A1
Authority
FR
France
Prior art keywords
liquid crystal
temperature
heating device
electrothermal
layer
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.)
Granted
Application number
FR7413965A
Other languages
French (fr)
Other versions
FR2268257B3 (en
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.)
PARKER RESEARCH ROBERT
Original Assignee
PARKER RESEARCH ROBERT
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 PARKER RESEARCH ROBERT filed Critical PARKER RESEARCH ROBERT
Priority to FR7413965A priority Critical patent/FR2268257A1/en
Publication of FR2268257A1 publication Critical patent/FR2268257A1/en
Application granted granted Critical
Publication of FR2268257B3 publication Critical patent/FR2268257B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G01K11/16—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials
    • G01K11/165—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials of organic liquid crystals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

The temperature indicator includes a layer of at least one liquid crystal compound and a resistance heater in thermal contact with the above. A partly insulating layer is above the liquid crystal layer, whose heat capacity, size and geometry ensure a required cooling rate for the device. The layer and the heating device are practically enclosed in an insulating case; The heating device is in the form of a plate or foil resistance heating element, on top of which the liquid crystal layer is placed.
FR7413965A 1974-04-22 1974-04-22 Electrothermal analogue temperature indicator - shows the temperature of a heating device using liquid crystal display Granted FR2268257A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7413965A FR2268257A1 (en) 1974-04-22 1974-04-22 Electrothermal analogue temperature indicator - shows the temperature of a heating device using liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7413965A FR2268257A1 (en) 1974-04-22 1974-04-22 Electrothermal analogue temperature indicator - shows the temperature of a heating device using liquid crystal display

Publications (2)

Publication Number Publication Date
FR2268257A1 true FR2268257A1 (en) 1975-11-14
FR2268257B3 FR2268257B3 (en) 1977-03-04

Family

ID=9137952

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7413965A Granted FR2268257A1 (en) 1974-04-22 1974-04-22 Electrothermal analogue temperature indicator - shows the temperature of a heating device using liquid crystal display

Country Status (1)

Country Link
FR (1) FR2268257A1 (en)

Also Published As

Publication number Publication date
FR2268257B3 (en) 1977-03-04

Similar Documents

Publication Publication Date Title
GB1332615A (en) Device for indicating food temperatures
IT975692B (en) PROCEDURE AND BURNT DEVICE FOR HEATING ARTICLES AT MODERATE TEMPERATURES
GB1245054A (en) Thermal conductivity apparatus
SE390062B (en) DEVICE FOR DETERMINATION OF THE TEMPERATURE IN A RADIATION OVEN
US3822594A (en) Electrothermal analog temperature indicating device
ES413689A1 (en) Food storage and dispensing assembly
FR2268257A1 (en) Electrothermal analogue temperature indicator - shows the temperature of a heating device using liquid crystal display
FR2283618A1 (en) Electric heating device for liquid tank - has conductive film heating element between two insulating sheets
ES394204A1 (en) Heating and cooling device
ATE6398T1 (en) HEATING DEVICE FOR ELECTRICALLY HEATED DEVICES.
NO138069C (en) DEVICE FOR INDIVIDUAL TEMPERATURE CONTROL OF THE LOAD IN HEAT INSULATED CONTAINERS
SE394743B (en) DETERATOR FOR HEAT EXCHANGER WITH LIQUID HEATER
FR2281695A1 (en) Temperature control element for heating current - is to hot plate or similar appliance and contains thermistor in series with heating element
JPS52132439A (en) Exothermic device
FR2350032A1 (en) Positive temperature coefficient semiconductor heating device - has heating element in good thermal contact with emission plate for even transfer of heat
GB1462461A (en) Device simulating the function of an electrothermal device
DK478777A (en) DEVICE FOR TEMPERATURE LIMITATION IN CHANNEL HEATING SYSTEMS
JPS5235710A (en) In-material-heat reflection plate device in heating furnaces
ZA731199B (en) Heat sink with thermal responsive device
JPS5344037A (en) Printing device by means of hot stamp element
JPS5311768A (en) Electric mosquito avoiding device
CA940983A (en) Bifunctional thermostat device for a heating type refrigerator having both an electric heater and a gas heater
JPS53118845A (en) Temperature control apparatus
JPS52128789A (en) Sealing device for top of container
DROZDOV et al. Investigation of the operation of a thin-film heat gauge with insulation for transient processes(Differential catalytic thin film heat gage for measuring surface temperature variations and ionized flow heat transfer, noting insulating boundary layer thickness)

Legal Events

Date Code Title Description
ST Notification of lapse