GB742726A - Improved automatic control for electrical heater circuits - Google Patents
Improved automatic control for electrical heater circuitsInfo
- Publication number
- GB742726A GB742726A GB5627/53A GB562753A GB742726A GB 742726 A GB742726 A GB 742726A GB 5627/53 A GB5627/53 A GB 5627/53A GB 562753 A GB562753 A GB 562753A GB 742726 A GB742726 A GB 742726A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heaters
- regulator
- relay
- winding
- bridge
- 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
- G05D23/2401—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 using a heating element as a sensing element
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Resistance Heating (AREA)
- Resistance Heating (AREA)
Abstract
742,726. Automatic temperature control systems; automatic regulators. NAPIER & SON, Ltd., D. Feb. 18, 1954 [Feb. 27, 1953], No. 5627/53. Class 38 (4). Aircraft de-icing heaters 14 are connected through contacts 11 to a D.C. or A.C. supply when a relay 24 is energized by operation of a manual switch 21. Under these conditions a winding 15 of a carbon pile regulator 16 is connected across a shunt 13 in the heater circuit so that a bridge circuit including regulator 16 renders a rectifier 30 conductive to shunt the bridge output. But heater resistance rises with increase of heater temperature, thus reducing the energization of winding 15 until, at the predetermined temperature, the bridge output polarity reverses and rectifier 30 is non- conductive. Relay 31 is then operated by the bridge output to de-energize heaters 14 through relays 37 and 24. A relay 46 is also de-energized by contacts 45 of relay 24 to connect a second winding 41 of regulator 16 in series with heaters 14 in a high resistance circuit across the supply. The current in this circuit, which is too small to cause appreciable heating, rises as the heater temperature falls until, at a predetermined temperature the bridge is balanced and the heaters switched on again. Heater temperature is thus maintained between two limits. A carbon pile regulator 27 in the bridge circuit responds to supply voltage and compensates for variations of the latter. A carbon pile regulator 42 responds to the voltage across the heaters during cooling and maintains that voltage constant to increase the corresponding current change in winding 41. A suitable construction of carbon pile is shown in Fig. 2 in which the carbon stack 16 is housed in a tubular armature 53 mounted on flexible spiders 54, 55. Windings 15 and 41 act on the armature in opposition to a spring 64 the forcedeflection characteristic of which is adjustable by a threaded core 66. Pile contacts 51, 52 are connected to lead 62 and the casing respectively.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5627/53A GB742726A (en) | 1953-02-27 | 1953-02-27 | Improved automatic control for electrical heater circuits |
| FR1097019D FR1097019A (en) | 1953-02-27 | 1954-02-26 | Improvement in automatic adjustment of electric heating circuits |
| BE526864D BE526864A (en) | 1953-02-27 | 1954-02-27 | PERFECTED AUTOMATIC CONTROL OF HEATING ELECTRICAL CIRCUITS |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1097019X | 1953-02-27 | ||
| GB5627/53A GB742726A (en) | 1953-02-27 | 1953-02-27 | Improved automatic control for electrical heater circuits |
| GB526864X | 1953-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB742726A true GB742726A (en) | 1956-01-04 |
Family
ID=62043975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5627/53A Expired GB742726A (en) | 1953-02-27 | 1953-02-27 | Improved automatic control for electrical heater circuits |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE526864A (en) |
| FR (1) | FR1097019A (en) |
| GB (1) | GB742726A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112046766A (en) * | 2020-09-04 | 2020-12-08 | 北京中科利丰科技有限公司 | Constant temperature system of energy storage battery of unmanned aerial vehicle and unmanned aerial vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1210099B (en) * | 1959-02-04 | 1966-02-03 | Siemens Elektrogeraete Gmbh | Control circuit for electric hotplates and similar heaters |
-
1953
- 1953-02-27 GB GB5627/53A patent/GB742726A/en not_active Expired
-
1954
- 1954-02-26 FR FR1097019D patent/FR1097019A/en not_active Expired
- 1954-02-27 BE BE526864D patent/BE526864A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112046766A (en) * | 2020-09-04 | 2020-12-08 | 北京中科利丰科技有限公司 | Constant temperature system of energy storage battery of unmanned aerial vehicle and unmanned aerial vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1097019A (en) | 1955-06-28 |
| BE526864A (en) | 1954-03-25 |
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