GB1017636A - Improvements in or relating to devices for preventing substances from exceeding a given temperature - Google Patents

Improvements in or relating to devices for preventing substances from exceeding a given temperature

Info

Publication number
GB1017636A
GB1017636A GB37537/63A GB3753763A GB1017636A GB 1017636 A GB1017636 A GB 1017636A GB 37537/63 A GB37537/63 A GB 37537/63A GB 3753763 A GB3753763 A GB 3753763A GB 1017636 A GB1017636 A GB 1017636A
Authority
GB
United Kingdom
Prior art keywords
resistor
liquid
heater
operating point
given temperature
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
GB37537/63A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1017636A publication Critical patent/GB1017636A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors
    • 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
    • A47J31/00—Apparatus for making beverages
    • A47J31/04—Coffee-making apparatus with rising pipes
    • A47J31/043—Vacuum-type coffee-making apparatus with rising pipes in which hot water is passed to the upper bowl in which the ground coffee is placed and subsequently the heat source is cut-off and the water is sucked through the filter by the vacuum in the lower bowl
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1406—Terminals or electrodes formed on resistive elements having positive temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members

Abstract

1,017,636. Temperature control arrangements. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 24, 1963 [Sept. 27, 1962], No. 37537/63. Heading H2H. To prevent the liquid in a container 1 from exceeding a given temperature when an electrical heater 2 is energized, the latter is connected in series with a positive temperature coefficient resistor 3 thermally-coupled to the liquid and having a voltage-current characteristic with positively and negatively sloped portions. Fig. 2 shows two such characteristics T 1 , T 2 together with a load line R representing the heater 2, the characteristics corresponding to certain temperatures of the liquid and T 1 being so chosen that when heater 2 is initially energized an operating point P 1 is achieved whereby the resistor 3 has a low value and a large current flows through the heater 2. Resistor 3 is exposed to the vapour from the liquid so that as the liquid temperature rises the resistor characteristic moves towards T 2 , arrival at which brings the operating point P 1 to the negative (unstable) portion of the characteristic corresponding to rapid increase in resistor value. The operating point thus moves rapidly to P 2 to reduce the current through the heater 2 until the supply 4 is removed. The resistor 3 may be disposed so that its dissipated heat assists in heating the liquid, and thermal coupling between the resistor and liquid may be made through a bimetal strip which moves to contact the resistor when the given temperature has been reached. Application of the invention to heating solids is envisaged.
GB37537/63A 1962-09-27 1963-09-24 Improvements in or relating to devices for preventing substances from exceeding a given temperature Expired GB1017636A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN22142A DE1155855B (en) 1962-09-27 1962-09-27 Device for protecting an electrical device

Publications (1)

Publication Number Publication Date
GB1017636A true GB1017636A (en) 1966-01-19

Family

ID=7342024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37537/63A Expired GB1017636A (en) 1962-09-27 1963-09-24 Improvements in or relating to devices for preventing substances from exceeding a given temperature

Country Status (3)

Country Link
US (1) US3187164A (en)
DE (1) DE1155855B (en)
GB (1) GB1017636A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360951U (en) * 1989-10-20 1991-06-14

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400252A (en) * 1965-10-20 1968-09-03 Matsushita Electric Ind Co Ltd Electrical heating device
US3375774A (en) * 1967-01-05 1968-04-02 Matsushita Electric Ind Co Ltd Fully automatic electric coffee pot
US3467817A (en) * 1967-02-23 1969-09-16 West Bend Co Temperature control circuit
US3474963A (en) * 1967-05-24 1969-10-28 Texas Instruments Inc Thermistor temperature control system
US3633374A (en) * 1970-02-06 1972-01-11 Gen Motors Corp Refrigerator with self-regulating heaters
DE2442717A1 (en) * 1974-09-06 1976-03-18 Karl Fischer Electric cooker hotplate with controlled characteristics - allows full power to be supplied to the plate when appropriate but prevents overheating
SE398280B (en) * 1975-11-20 1977-12-12 Eldon Ab UNLIMITED SHORT CIRCUIT ELECTRIC TRANSFORMER
US4329726A (en) * 1978-12-01 1982-05-11 Raychem Corporation Circuit protection devices comprising PTC elements
US4238812A (en) * 1978-12-01 1980-12-09 Raychem Corporation Circuit protection devices comprising PTC elements
US4307688A (en) * 1980-02-07 1981-12-29 General Motors Corporation Diesel engine glow plug energization control system
US4475138A (en) * 1980-04-21 1984-10-02 Raychem Corporation Circuit protection devices comprising PTC element
US4413301A (en) * 1980-04-21 1983-11-01 Raychem Corporation Circuit protection devices comprising PTC element
US4458137A (en) * 1981-04-09 1984-07-03 Rosemount Inc. Electric heater arrangement for fluid flow stream sensors
DE8310976U1 (en) * 1983-04-13 1983-09-01 Elpag AG Chur, 7001 Chur Electric water heater for household appliances, in particular coffee machines
EP0139635A1 (en) * 1983-04-15 1985-05-08 Ab Mekania-Verken Heating pad preferably for car seats
US4759189A (en) * 1985-12-02 1988-07-26 Design & Manufacturing Corporation Self-limiting thermal fluid displacement actuator
WO1997006660A2 (en) * 1995-08-15 1997-02-27 Bourns, Multifuse (Hong Kong), Ltd. Surface mount conductive polymer devices and method for manufacturing such devices
TW309619B (en) * 1995-08-15 1997-07-01 Mourns Multifuse Hong Kong Ltd
US6020808A (en) 1997-09-03 2000-02-01 Bourns Multifuse (Hong Kong) Ltd. Multilayer conductive polymer positive temperature coefficent device
US6242997B1 (en) 1998-03-05 2001-06-05 Bourns, Inc. Conductive polymer device and method of manufacturing same
US6236302B1 (en) 1998-03-05 2001-05-22 Bourns, Inc. Multilayer conductive polymer device and method of manufacturing same
US6172591B1 (en) 1998-03-05 2001-01-09 Bourns, Inc. Multilayer conductive polymer device and method of manufacturing same
CN1319235A (en) 1998-09-25 2001-10-24 伯恩斯公司 Two-step method for preparing positive temperature coefficient polymeric material
US6429533B1 (en) 1999-11-23 2002-08-06 Bourns Inc. Conductive polymer device and method of manufacturing same
ES2306935T3 (en) * 2004-03-19 2008-11-16 Dbk David + Baader Gmbh ELECTRICAL HEATING DEVICE WITH CURRENT DETECTOR.
DE202007006636U1 (en) * 2007-05-07 2007-07-26 Eichenauer Heizelemente Gmbh & Co. Kg Liquid container for screen wash liquid, fuel or urea solution in a motor vehicle comprises a wall supporting a circuit protection element to protect from overheating

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2163297A (en) * 1937-08-10 1939-06-20 Alvin H Waage Thermostat remote control
US2896056A (en) * 1955-09-20 1959-07-21 Ronald J Borrup Electric thermo control circuit
US3060298A (en) * 1959-11-02 1962-10-23 Bendix Corp Electric heater systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360951U (en) * 1989-10-20 1991-06-14
JPH06119Y2 (en) * 1989-10-20 1994-01-05 ピジョン株式会社 baby bottle

Also Published As

Publication number Publication date
US3187164A (en) 1965-06-01
DE1155855B (en) 1963-10-17

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