GB867217A - An automatic control system - Google Patents
An automatic control systemInfo
- Publication number
- GB867217A GB867217A GB36357/58A GB3635758A GB867217A GB 867217 A GB867217 A GB 867217A GB 36357/58 A GB36357/58 A GB 36357/58A GB 3635758 A GB3635758 A GB 3635758A GB 867217 A GB867217 A GB 867217A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- relay
- variable
- fluid
- energize
- 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
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
- G05D23/1921—Control of temperature characterised by the use of electric means characterised by the type of controller using a thermal motor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/011—Automatic controllers electric details of the correcting means
-
- 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
- G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
- Air Conditioning Control Device (AREA)
Abstract
867,217. Automatic control systems. ZAVODY RUDYCH LETRIC 1930, NARODNI PODNIK. Nov. 12, 1958 [Nov. 21, 1957], No. 36367/58. Class 38 (4). A switch operated by change of a measured variable controls, through a delayed-action electric relay, the energization of an electric element heating fluid in an enclosed chamber to operate a regulator by the change in pressure of the fluid. In Fig. 2 when a variable, e.g. temperature or humidity in an air-conditioning system, falls below a predetermined value, contacts 80 close to energize a relay 50 from an A.C. source through a germanium diode 40 so that contacts A<SP>1</SP>, C<SP>1</SP> open to de-energize a heater 1 associated with a two-fluid vapour generator 9, the inner wall of which is in the form of a bellows so that a valve 4 is opened to restore the variable to the predetermined value e.g. by increasing a heat supply. To reduce sparking, a germanium diode 70 is connected to provide a circuit for currents self-induced in relay 50 when contacts 80 open. A resistance-condenser network 30, 60 may also be provided to delay operation of relay 50 so that it does not follow high-frequency operation of contacts 80 caused, for example, by vibration of a body on which the contacts are mounted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS867217X | 1957-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB867217A true GB867217A (en) | 1961-05-03 |
Family
ID=5456310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36357/58A Expired GB867217A (en) | 1957-11-21 | 1958-11-12 | An automatic control system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB867217A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2678751A1 (en) * | 1991-07-03 | 1993-01-08 | Europ Agence Spatiale | ELECTRONICALLY CONTROLLED FLUID PRESSURE REGULATOR AND THERMALLY CONTROLLED VALVE, PARTICULARLY FOR FLUIDS FOR SUPPLYING SPACE ENGINES. |
-
1958
- 1958-11-12 GB GB36357/58A patent/GB867217A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2678751A1 (en) * | 1991-07-03 | 1993-01-08 | Europ Agence Spatiale | ELECTRONICALLY CONTROLLED FLUID PRESSURE REGULATOR AND THERMALLY CONTROLLED VALVE, PARTICULARLY FOR FLUIDS FOR SUPPLYING SPACE ENGINES. |
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