GB809203A - Improvements in or relating to automatic control systems for central heating plants - Google Patents
Improvements in or relating to automatic control systems for central heating plantsInfo
- Publication number
- GB809203A GB809203A GB15165/56A GB1516556A GB809203A GB 809203 A GB809203 A GB 809203A GB 15165/56 A GB15165/56 A GB 15165/56A GB 1516556 A GB1516556 A GB 1516556A GB 809203 A GB809203 A GB 809203A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- building
- bridge
- control systems
- sensitive
- 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
- 238000010438 heat treatment Methods 0.000 title 1
- 230000003111 delayed effect Effects 0.000 abstract 2
- 230000000630 rising effect Effects 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000001052 transient effect Effects 0.000 abstract 1
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
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
- G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Remote Sensing (AREA)
- Control Of Temperature (AREA)
- Control Of Combustion (AREA)
Abstract
809,203. Automatic temperature-control systems. REGULATOR A.G. May 15, 1956 [May 16, 1955], No. 15165/56. Class 38 (4). [Also in Group XXXVIII] In an arrangement wherein the temperature in a building is maintained substantially constant by at least two temperature-sensitive resistors A, B disposed one in the rising pipe and the other at the external surface of the building body and forming part of a bridge which is arranged to adjust through an amplifier F and a motor-operated valve MV the temperature of the fluid in the rising pipe, two further temperature-sensitive devices M, D, one of which M has a delayed response time of the same order as the heat lag of the building are provided and connected so that rapid external temperature changes do not cause room changes in the building temperature during transient conditions. Resistors M and D which are part of a second bridge connected in series with the first produce an output across potentiometer TN during ambient temperature changes which aids the output of the main bridge. A construction and mounting arrangement of the two further thermistors providing for them to be swept uniformly by atmospheric air is described with reference to Fig. 3 (not shown), the temperature-sensitive resistor having the delayed response time being obtained by disposing the resistor in a delaying heat transferring medium.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE809203X | 1955-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB809203A true GB809203A (en) | 1959-02-18 |
Family
ID=20342783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15165/56A Expired GB809203A (en) | 1955-05-16 | 1956-05-15 | Improvements in or relating to automatic control systems for central heating plants |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB809203A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3150826A (en) * | 1960-03-15 | 1964-09-29 | Satchwell Controls Ltd | Device for controlling a central heating system |
| US3246839A (en) * | 1961-06-26 | 1966-04-19 | Satchwell Controls Ltd | Device for controlling a central heating system |
-
1956
- 1956-05-15 GB GB15165/56A patent/GB809203A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3150826A (en) * | 1960-03-15 | 1964-09-29 | Satchwell Controls Ltd | Device for controlling a central heating system |
| US3246839A (en) * | 1961-06-26 | 1966-04-19 | Satchwell Controls Ltd | Device for controlling a central heating system |
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