GB794361A - Improvements in or relating to gaseous fuel control devices - Google Patents
Improvements in or relating to gaseous fuel control devicesInfo
- Publication number
- GB794361A GB794361A GB2255755A GB2255755A GB794361A GB 794361 A GB794361 A GB 794361A GB 2255755 A GB2255755 A GB 2255755A GB 2255755 A GB2255755 A GB 2255755A GB 794361 A GB794361 A GB 794361A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- armature
- pressure
- magnet
- spring
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
- F23N5/107—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
794,361. Valves. PARKINSON & COWAN, Ltd. Aug. 3, 1956 [Aug. 5, 1955], No. 22557/55. Class 135. A gas-control valve member 19, balanced by a diaphragm 20 subject on one side to atmospheric pressure to produce negligible pressure on the valve due to inlet, 7, pressure, is urged away from its seat 18 by weight or spring means to maintain substantially constant outlet, 9, pressure, and has a further control device, energized by thermo-electric means, comprising an electromagnet 22 normally urged in the opening direction of the valve 19 by spring means 25, and having an armature 26 urged away from the electro-magnet, by spring means 27, adapted on de-onergization to seat the valve member 19, and manual means 29 for moving the electro-magnet into contact with the armature. The device may be used in the control system for a main burner, the thermo-electric means being actuated by a pilot burner to energize the electromagnet. To ignite the main burner a main tap is opened, passing gas to the control valve and to the pilot burner; since the electromagnet is not energized, the spring 27 holds the armature 26 in contact with the valve member 19 and retains the valve closed. The pilot burner is ignited and heats the thermo-electric device which energizes the magnet 22, the energized magnet being insufficiently strong to attract the armature 26, but strong enough to hold the armature once in contact. Manual pressure on the button 29 moves the magnet 22 into contact with the armature 26, and release of the button allows the magnet and armature together to move away from the valve 19 under the action of spring 25. The valve 19 opens under its weight and since the inlet pressure is balanced by the diaphragm 20, open at 31 to atmosphere, the valve maintains substantially constant outlet pressure providing the inlet pressure sufficiently exceeds the required outlet pressure. Failure of the pilot flame causes de-energization of the electromagnet, whereupon the armature is urged by the spring 27 to close the valve 19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2255755A GB794361A (en) | 1955-08-05 | 1955-08-05 | Improvements in or relating to gaseous fuel control devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2255755A GB794361A (en) | 1955-08-05 | 1955-08-05 | Improvements in or relating to gaseous fuel control devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB794361A true GB794361A (en) | 1958-04-30 |
Family
ID=10181351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2255755A Expired GB794361A (en) | 1955-08-05 | 1955-08-05 | Improvements in or relating to gaseous fuel control devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB794361A (en) |
-
1955
- 1955-08-05 GB GB2255755A patent/GB794361A/en not_active Expired
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