GB1351740A - Electric heat storage devices - Google Patents
Electric heat storage devicesInfo
- Publication number
- GB1351740A GB1351740A GB2008670A GB1351740DA GB1351740A GB 1351740 A GB1351740 A GB 1351740A GB 2008670 A GB2008670 A GB 2008670A GB 1351740D A GB1351740D A GB 1351740DA GB 1351740 A GB1351740 A GB 1351740A
- Authority
- GB
- United Kingdom
- Prior art keywords
- during
- probe
- temperature
- meter
- heater
- 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
Links
Classifications
-
- 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
-
- 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
- G05D23/1923—Control of temperature characterised by the use of electric means characterised by the type of controller using thermal energy, the cost of which varies in function of time
Abstract
1351740 Automatic control of temperature ALLIED IRONFOUNDERS Ltd 21 July 1971 [27 April 19701 20086/70 Heading G3R An electric storage heater connected to a two-rate public supply meter ("white" meter) is controlled by a bridge circuit the datum of which is automatically changed by the white meter whereby the heater will be charged automatically to say 1250‹F. during the night and will not be permitted to fall below 260‹F. during the day. Thus a resistor R10 is by-passed during the night by a switch 11, controlled by contacts on the meter, and is effectively in series with a platinum resistance temperature sensor 5 in one arm of the bridge, during the day. At room temperature the probe 5 has for example a resistance of 15 ohms and when this increases to say 37 ohms at 1250‹F. a transistor 9, the base/emitter circuit of which is connected across the output diagonal of the bridge, is biased to conduct and pass current via an amplifier 3 to a relay 4 which switches off current to the heater (not shown) connected to cables 1. With R10 in series with the probe, the probe circuit has a total resistance of 37 ohms when the probe temperature is 260‹F. so that the control circuit will operate to maintain the heater core at this temperature during the day, which is just enough to maintain the room temperature at 140‹F. Alternatively the temperature sensor may be a thermocouple, in which case a secondary D.C. voltage source may be switched into and out of the bridge circuit instead of R10.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2008670 | 1970-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1351740A true GB1351740A (en) | 1974-05-01 |
Family
ID=10140147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2008670A Expired GB1351740A (en) | 1970-04-27 | 1970-04-27 | Electric heat storage devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1351740A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2543274A1 (en) * | 1983-03-24 | 1984-09-28 | Noirot Mt | Improvements to accumulating radiators |
-
1970
- 1970-04-27 GB GB2008670A patent/GB1351740A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2543274A1 (en) * | 1983-03-24 | 1984-09-28 | Noirot Mt | Improvements to accumulating radiators |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4228809A (en) | Temperature controller for a microwave heating system | |
US3903395A (en) | Temperature control system | |
GB1238082A (en) | ||
GB1175336A (en) | Anti-Shock Control Devices for Electrically Heated Glass. | |
US2816262A (en) | Voltage sensitive device | |
US3812362A (en) | Smoke detector circuit | |
GB1420150A (en) | Electrically heated panel | |
GB1134879A (en) | Fail safe controller | |
US3360693A (en) | Switching circuit for an electrically heated blanket | |
GB1351740A (en) | Electric heat storage devices | |
US4185207A (en) | Amplifier system with alternate inputs | |
ES335013A1 (en) | A control device for the use of a temperature excess control system on an electrically heated blanket. (Machine-translation by Google Translate, not legally binding) | |
GB1225302A (en) | Temperature-Dependent control of the supply of current to an electrical appliance | |
GB1403044A (en) | Electric blanket control circuit | |
GB1316169A (en) | Battery charging system | |
GB1309819A (en) | Thermistor controlled overload protection circuit | |
GB1164826A (en) | Protective Systems for Electric Lines | |
JPS5647814A (en) | Temperature excessive rise preventing device of electric carpet | |
GB1338376A (en) | Electrical heating apparatus | |
GB908813A (en) | Improvements in or relating to electric circuits for controlling the supply of current to a load impedance | |
GB935475A (en) | Improvements in or relating to electric circuits for controlling the supply of powerto a load | |
GB1042550A (en) | An a.c. electrical switching circuit | |
GB909620A (en) | Means for controlling the output of a generator | |
GB1156935A (en) | Means for Controlling the Heating of Electric Blankets and the like | |
GB1185215A (en) | Electric shutter for photographic devices |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |