GB1064002A - Electro-pneumatic temperature controlling systems - Google Patents
Electro-pneumatic temperature controlling systemsInfo
- Publication number
- GB1064002A GB1064002A GB7827/65A GB782765A GB1064002A GB 1064002 A GB1064002 A GB 1064002A GB 7827/65 A GB7827/65 A GB 7827/65A GB 782765 A GB782765 A GB 782765A GB 1064002 A GB1064002 A GB 1064002A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thermistor
- electro
- valve
- feb
- responsive
- 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
- G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
- G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in time
-
- 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
- G05D23/1925—Control of temperature characterised by the use of electric means using a combination of auxiliary electric and non-electric power
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
1,064,002. Automatic temperature control systems; fluid pressure servomotor systems. ROBERTSHAW CONTROLS CO. Feb. 23, 1965 [Feb. 25, 1964], No.7827/65. Headings G3P and G3R. An automatic temperature control system for heating or cooling comprises a thermistor 88, Fig. 2, sensitive to space temperature, a second thermistor 138 responsive to outside temperature and third thermistor responsive to fluid temperature 126 connected into a bridge circuit, the voltage T3, T4 across which is applied to a galvanometer coil 18 of an electro-pneumatic force balance unit. Calibration may be performed by a linked switch 150 and a rheostat 122 to provide a null balance across T3, T4. Resistors 90, 128, 140 linearize the thermistor characteristics and a rectifier reversing switch 72, 78 gives forward or reverse actuation. A night set back time switch 116 is also provided. The force balance unit comprises a leak port 48, 50, Fig. 3, controlled by a lever 20 operated by the galvanometer 18 causing variations of pressure in a chamber PS which unbalances the force on diaphragms D1, D2 and a floating spindle 26 causing one end of a poppet valve 34 to be displaced relative to one of the valve seats 30, 32 admitting or releasing air from a valve 58, 60 controlling the plant.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34727564A | 1964-02-25 | 1964-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1064002A true GB1064002A (en) | 1967-04-05 |
Family
ID=23363050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7827/65A Expired GB1064002A (en) | 1964-02-25 | 1965-02-23 | Electro-pneumatic temperature controlling systems |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1430475A (en) |
| GB (1) | GB1064002A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983000574A1 (en) * | 1981-08-05 | 1983-02-17 | Wright, Archibald, Robert | Temperature controlling or detecting device |
| GB2223109A (en) * | 1988-08-18 | 1990-03-28 | Regel Messtechnik Gmbh | Gas pressure regulating means |
| CN114076641A (en) * | 2020-08-11 | 2022-02-22 | 沃克工业技术有限公司 | Wireless fluid temperature sensing for multi-way valves |
-
1965
- 1965-02-23 GB GB7827/65A patent/GB1064002A/en not_active Expired
- 1965-02-25 FR FR7065A patent/FR1430475A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983000574A1 (en) * | 1981-08-05 | 1983-02-17 | Wright, Archibald, Robert | Temperature controlling or detecting device |
| GB2223109A (en) * | 1988-08-18 | 1990-03-28 | Regel Messtechnik Gmbh | Gas pressure regulating means |
| GB2223109B (en) * | 1988-08-18 | 1993-03-24 | Regel Messtechnik Gmbh | Gas pressure regulating means |
| CN114076641A (en) * | 2020-08-11 | 2022-02-22 | 沃克工业技术有限公司 | Wireless fluid temperature sensing for multi-way valves |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1430475A (en) | 1966-03-04 |
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