GB980636A - Improvements in or relating to light-sensitive probes - Google Patents
Improvements in or relating to light-sensitive probesInfo
- Publication number
- GB980636A GB980636A GB1205161A GB1205161A GB980636A GB 980636 A GB980636 A GB 980636A GB 1205161 A GB1205161 A GB 1205161A GB 1205161 A GB1205161 A GB 1205161A GB 980636 A GB980636 A GB 980636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photo
- operated
- electric device
- clausen
- thermally
- 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
- F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
- F23N5/085—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electrical or electromechanical means
-
- 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
- F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Abstract
980,636. Photo-electric control systems. M. CLAUSEN, [trading as FIRMA DANFOSS VED. ING. M. CLAUSEN]. April 4, 1961 [March 31, 1960], No. 12051/61. Heading G1A. A light-sensitive probe used, for example, in flame control systems, comprises a photo-electric device 4 connected in series with a thermallysensitive device 5 operating when the probe is subjected to a temperature above a predetermined value to disconnect the photo-electric device 4 from a control relay in a heat control unit 1. The arrangement is employed because the increase of the dark current due to a high temperature may be sufficient to hold operated the control relay which is to be operated by illumination and released by the normal dark current. The photo-electric device 4, may comprise a photo-resistor and the thermally operated device 5 may comprise a switch with a soldered contact member, or a bi-metallic element fitted with a heating coil and operating so that the connection to the circuit 1 is broken when the temperature rises above the predetermined level. The operation of the thermally-sensitive member may operate an alarm circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED0033006 | 1960-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB980636A true GB980636A (en) | 1965-01-13 |
Family
ID=7041549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1205161A Expired GB980636A (en) | 1960-03-31 | 1961-04-04 | Improvements in or relating to light-sensitive probes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB980636A (en) |
-
1961
- 1961-04-04 GB GB1205161A patent/GB980636A/en not_active Expired
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