GB2474238B - Improvements in and relating to thermostats - Google Patents
Improvements in and relating to thermostatsInfo
- Publication number
- GB2474238B GB2474238B GB0917454.1A GB0917454A GB2474238B GB 2474238 B GB2474238 B GB 2474238B GB 0917454 A GB0917454 A GB 0917454A GB 2474238 B GB2474238 B GB 2474238B
- Authority
- GB
- United Kingdom
- Prior art keywords
- terminals
- actuator
- switches
- thermostat
- 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 - Fee Related
Links
- 239000012530 fluid Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/002—Thermally-actuated switches combined with protective means
-
- 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
- H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
- H01H37/48—Thermally-sensitive members actuated due to expansion or contraction of a solid with extensible rigid rods or tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/006—Thermally-actuated switches with different switches operated at substantially different temperatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/12—Means for adjustment of "on" or "off" operating temperature
- H01H37/22—Means for adjustment of "on" or "off" operating temperature by adjustment of a member transmitting motion from the thermal element to contacts or latch
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0202—Switches
- H05B1/0216—Switches actuated by the expansion of a solid element, e.g. wire or rod
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0275—Heating of spaces, e.g. rooms, wardrobes
- H05B1/0283—For heating of fluids, e.g. water heaters
Abstract
A thermostat has two separate switches operated by one differential expansion actuator, a thermostatic switch 4 for controlling the temperature of fluid such as water in a tank and a thermal cut-out switch 5 to turn off a heater if the thermostatic switch fails. An assembly comprising the switches is attached to the end of an elongate actuator 3 comprising actuator members having different thermal expansion coefficients, such as a tube 7 attached to a rod 8 at its distal end. Changes in temperature can cause relative movement of the actuator members 7,8 which act separately on the switches to change their state at different thresholds, The temperature threshold may be adjustable using dial 19 for the thermostatic switch, which can automatically reset while the cut-out switch may require manual reset using push pin 33. A four-terminal thermostat (fig 6) can be adapted to replace a two-terminal thermostat by an adaptor (fig 8,70) that short-circuits two of its terminals such as the element terminals, (fig 8, 53,54) , the power supply terminals (fig 9, 51,52) or pilot light terminals (fig 10, 63,64). The adaptor can be insulated hand have male or female connectors.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0917454.1A GB2474238B (en) | 2009-10-06 | 2009-10-06 | Improvements in and relating to thermostats |
EP10773955A EP2494572A2 (en) | 2009-10-06 | 2010-10-06 | Improvements in and relating to thermostats |
PCT/GB2010/051673 WO2011042740A2 (en) | 2009-10-06 | 2010-10-06 | Improvements in and relating to thermostats |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0917454.1A GB2474238B (en) | 2009-10-06 | 2009-10-06 | Improvements in and relating to thermostats |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0917454D0 GB0917454D0 (en) | 2009-11-18 |
GB2474238A GB2474238A (en) | 2011-04-13 |
GB2474238B true GB2474238B (en) | 2013-12-04 |
Family
ID=41393891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0917454.1A Expired - Fee Related GB2474238B (en) | 2009-10-06 | 2009-10-06 | Improvements in and relating to thermostats |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2494572A2 (en) |
GB (1) | GB2474238B (en) |
WO (1) | WO2011042740A2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201518418D0 (en) * | 2015-10-19 | 2015-12-02 | Shel Nibe Mfg Co Ltd | Thermostat with independent over-temperature actuation |
CN111457579B (en) * | 2020-05-14 | 2024-01-19 | 珠海格力电器股份有限公司 | Water heater system and control method thereof |
EP4303903A1 (en) * | 2022-07-04 | 2024-01-10 | Termoregolatori Campini Corel S.p.A. | Rod thermostat with safety |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1543230A (en) * | 1900-01-01 | Improvements to built-in safety thermal adjustment devices | ||
GB652067A (en) * | 1948-07-19 | 1951-04-18 | Kaspar Erwin Bader | Improvements in or relating to electric heaters for typesetting and composing machines and the like |
GB1277848A (en) * | 1970-04-16 | 1972-06-14 | Ranco Controls Ltd | Thermostat |
DE2343834A1 (en) * | 1973-08-30 | 1975-04-10 | Ego Elektro Blanc & Fischer | Hot plate temperature limiter - has temperature sensitive element exposed to the heat of an electric hot-plate |
GB2156157A (en) * | 1984-03-16 | 1985-10-02 | Emerson Electric Co | Dual temperature thermostat |
US20030146818A1 (en) * | 2001-01-10 | 2003-08-07 | Hans-Peter Morbitzer | Temperature limiter |
US20030192877A1 (en) * | 2001-04-27 | 2003-10-16 | Michael Danko | Method and apparatus for mounting a heater thermostat and temperature sensitive fuse |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB784841A (en) * | 1954-07-08 | 1957-10-16 | Technicon Int Ltd | Adjustable temperature control device |
US3821683A (en) * | 1973-04-17 | 1974-06-28 | Gen Electric | Thermal switch |
SE419806B (en) * | 1973-08-30 | 1981-08-24 | Ego Elektro Blanc & Fischer | ELECTRICAL SWITCH |
US3967545A (en) * | 1974-02-14 | 1976-07-06 | John Baker | Controlling the supply of electric current to a room |
DE2748109C2 (en) * | 1977-10-27 | 1982-04-15 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Electric cooker |
GB9003209D0 (en) * | 1990-02-13 | 1990-04-11 | Strix Ltd | Hob control |
FR2807155B1 (en) * | 2000-03-30 | 2003-03-21 | Giat Ind Sa | PYROTECHNIC INITIATOR WHICH CAN BE EQUIPPED WITH AN ELECTRIC OR ELECTRONIC COMPONENT AND / OR A CONNECTOR |
JP4314902B2 (en) * | 2003-06-30 | 2009-08-19 | 住友電気工業株式会社 | Burn-in method |
-
2009
- 2009-10-06 GB GB0917454.1A patent/GB2474238B/en not_active Expired - Fee Related
-
2010
- 2010-10-06 EP EP10773955A patent/EP2494572A2/en not_active Withdrawn
- 2010-10-06 WO PCT/GB2010/051673 patent/WO2011042740A2/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1543230A (en) * | 1900-01-01 | Improvements to built-in safety thermal adjustment devices | ||
GB652067A (en) * | 1948-07-19 | 1951-04-18 | Kaspar Erwin Bader | Improvements in or relating to electric heaters for typesetting and composing machines and the like |
GB1277848A (en) * | 1970-04-16 | 1972-06-14 | Ranco Controls Ltd | Thermostat |
DE2343834A1 (en) * | 1973-08-30 | 1975-04-10 | Ego Elektro Blanc & Fischer | Hot plate temperature limiter - has temperature sensitive element exposed to the heat of an electric hot-plate |
GB2156157A (en) * | 1984-03-16 | 1985-10-02 | Emerson Electric Co | Dual temperature thermostat |
US20030146818A1 (en) * | 2001-01-10 | 2003-08-07 | Hans-Peter Morbitzer | Temperature limiter |
US20030192877A1 (en) * | 2001-04-27 | 2003-10-16 | Michael Danko | Method and apparatus for mounting a heater thermostat and temperature sensitive fuse |
Also Published As
Publication number | Publication date |
---|---|
GB0917454D0 (en) | 2009-11-18 |
WO2011042740A2 (en) | 2011-04-14 |
EP2494572A2 (en) | 2012-09-05 |
GB2474238A (en) | 2011-04-13 |
WO2011042740A3 (en) | 2011-06-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20140304 |