GB1194959A - Thermally-operated Actuators - Google Patents

Thermally-operated Actuators

Info

Publication number
GB1194959A
GB1194959A GB55819/68A GB5581968A GB1194959A GB 1194959 A GB1194959 A GB 1194959A GB 55819/68 A GB55819/68 A GB 55819/68A GB 5581968 A GB5581968 A GB 5581968A GB 1194959 A GB1194959 A GB 1194959A
Authority
GB
United Kingdom
Prior art keywords
evaporator
heater
liquid filling
liquid
flow
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
GB55819/68A
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB1194959A publication Critical patent/GB1194959A/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
    • G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

1,194,959. Temperature responsive actuating elements. LANDIS & GYR A. G. Nov. 25, 1968 [Nov. 28, 1967], No. 55819/68. Heading G1D. A thermal actuator comprises an evaporator 7 with a liquid filling 18, a heater 4 surrounding the evaporator 7 and connected to a control 1, a pressure chamber 13 connected by a tube 10 to the evaporator 7 and containing a bellows 14 with an end closure 15 which is displaced on vaporization of the liquid filling 18 against the action of a return spring 17, a body 11 of material which is not wetted by the liquid filling 18, contained within the evaporator and formed with capillary cavities permanently filled with vapour, and a flow throttle in the form of a porous ceramic or metallic filter 12 or by a single flow construction disposed on the flow path of the liquid between the evaporator 7 and pressure chamber 13 to prevent too sudden a return flow of cooled liquid to the evaporator 7 giving rise to a sudden decrease of vapour pressure therein. The evaporator is cylindrical and the heater 4 extends for a greater length thereon than the interior space of the evaporator. The body of material 11 is disposed at the hottest part of the evaporator. Heat conduction along the tube 10 will cool the lower end of the evaporator 7, and if desired the heater 4 may be arranged to provide this effect e.g. by an uneven distribution of the coils of the heater around the evaporator body. A suitable material for the body 11 is polytetra fluoroethylene or a fluorinated methacrylate polymer. A mixture of water and alcohol may be used for the liquid filling 18.
GB55819/68A 1967-11-28 1968-11-25 Thermally-operated Actuators Expired GB1194959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1680067A CH458082A (en) 1967-11-28 1967-11-28 Thermal actuator

Publications (1)

Publication Number Publication Date
GB1194959A true GB1194959A (en) 1970-06-17

Family

ID=4420328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55819/68A Expired GB1194959A (en) 1967-11-28 1968-11-25 Thermally-operated Actuators

Country Status (6)

Country Link
AT (1) AT280544B (en)
CH (1) CH458082A (en)
DE (1) DE1650465B1 (en)
FR (1) FR1596652A (en)
GB (1) GB1194959A (en)
SE (1) SE331951B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH638873A5 (en) * 1979-08-09 1983-10-14 Elektrowatt Ag THERMODYNAMIC ACTUATOR.
SE445590B (en) * 1979-09-17 1986-06-30 Arcu Armaturind THERMOSTATIC SENSOR AND WAY TO MANUFACTURE THE SAME
DE3002229C2 (en) * 1980-01-23 1983-04-28 Maschinenfabrik Teufel Gmbh, 7270 Nagold Thermostatic actuator, in particular for the automatic adjustment of air guiding devices in air conditioning systems
CH659858A5 (en) * 1982-12-20 1987-02-27 Elektrowatt Ag ELECTRIC THERMAL ACTUATOR.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1905683A (en) * 1928-11-27 1933-04-25 Gen Fire Extinguisher Co Thermostatically controlled valve
DE1027946B (en) * 1954-05-26 1958-04-10 Draegerwerk Ag Device to protect the valve closure parts of gas shut-off valves against the heat of compression (burnout protection)
DE1112358B (en) * 1959-01-19 1961-08-03 Lins Albert Electrically operated valve
DE1805751A1 (en) * 1967-12-21 1969-07-10 Ibm Dust-proof container for transporting and storing spools, etc.

Also Published As

Publication number Publication date
DE1650465B1 (en) 1970-11-26
SE331951B (en) 1971-01-18
CH458082A (en) 1968-06-15
AT280544B (en) 1970-04-10
FR1596652A (en) 1970-06-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees