GB806171A - Improvements in temperature control systems - Google Patents

Improvements in temperature control systems

Info

Publication number
GB806171A
GB806171A GB2918/56A GB291856A GB806171A GB 806171 A GB806171 A GB 806171A GB 2918/56 A GB2918/56 A GB 2918/56A GB 291856 A GB291856 A GB 291856A GB 806171 A GB806171 A GB 806171A
Authority
GB
United Kingdom
Prior art keywords
duct
space
temperature
predetermined temperature
control systems
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
Application number
GB2918/56A
Inventor
Theodore Nicholas Flight
George Ronald Shepherd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheostatic Co Ltd
Original Assignee
Rheostatic Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rheostatic Co Ltd filed Critical Rheostatic Co Ltd
Priority to GB2918/56A priority Critical patent/GB806171A/en
Priority to CH353872D priority patent/CH353872A/en
Priority to NL214104A priority patent/NL99648C/en
Priority to FR1168519D priority patent/FR1168519A/en
Publication of GB806171A publication Critical patent/GB806171A/en
Expired legal-status Critical Current

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
    • G05D23/1927—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 Combustion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

806,171. Automatic temperature control systems. RHEOSTATIC CO. Ltd. Jan.15, 1957 [Jan. 30, 1956], No. 2918/56. Class 38 (4). Means are provided for automatically controlling the temperature of air supplied to a space through a duct comprising temperature variable detecting elements and thermally operated switches located in both space and duct, control by the duct element only occurring when the space is above and the duct is below a predetermined temperature. The detecting elements in the space and duct are respectively temperature variable resistances 2 and 7, each being connected in a bridge circuit, unbalance of which creates a control signal for operating the heat supply regulating valve. Due to the connections of thermally operated switches 13, 14 the bridge controlled by the duct element only operates the regulating means when the space is above a predetermined temperature (switch 13 to H) and the duct is below a predetermined temperature (switch 14 to C1). Feedback to rebalance the bridges is applied to variable resistances 6, 12 by the regulating means.
GB2918/56A 1956-01-30 1956-01-30 Improvements in temperature control systems Expired GB806171A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2918/56A GB806171A (en) 1956-01-30 1956-01-30 Improvements in temperature control systems
CH353872D CH353872A (en) 1956-01-30 1957-01-24 Device for the automatic control of the temperature of a room heated by air flowing in through a duct
NL214104A NL99648C (en) 1956-01-30 1957-01-29 DEVICE FOR AUTOMATICALLY REGULATING THE TEMPERATURE IN A ROOM
FR1168519D FR1168519A (en) 1956-01-30 1957-01-29 Temperature control device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB2918/56A GB806171A (en) 1956-01-30 1956-01-30 Improvements in temperature control systems
GB1168519X 1956-01-30
GB214104T 1956-01-30
GB353872X 1956-01-30

Publications (1)

Publication Number Publication Date
GB806171A true GB806171A (en) 1958-12-23

Family

ID=61970613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2918/56A Expired GB806171A (en) 1956-01-30 1956-01-30 Improvements in temperature control systems

Country Status (4)

Country Link
CH (1) CH353872A (en)
FR (1) FR1168519A (en)
GB (1) GB806171A (en)
NL (1) NL99648C (en)

Also Published As

Publication number Publication date
CH353872A (en) 1961-04-30
FR1168519A (en) 1958-12-09
NL99648C (en) 1961-11-15

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