GB962224A - Improvements relating to thermostats - Google Patents

Improvements relating to thermostats

Info

Publication number
GB962224A
GB962224A GB1549360A GB1549360A GB962224A GB 962224 A GB962224 A GB 962224A GB 1549360 A GB1549360 A GB 1549360A GB 1549360 A GB1549360 A GB 1549360A GB 962224 A GB962224 A GB 962224A
Authority
GB
United Kingdom
Prior art keywords
piston
rubber
thermostat
sleeve
cavity
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
GB1549360A
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.)
Svenska AB Gasaccumulator
Original Assignee
Svenska AB Gasaccumulator
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 Svenska AB Gasaccumulator filed Critical Svenska AB Gasaccumulator
Publication of GB962224A publication Critical patent/GB962224A/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
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
    • G05D23/021—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste
    • G05D23/023—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste the sensing element being placed outside a regulating fluid flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K5/00—Measuring temperature based on the expansion or contraction of a material
    • G01K5/02—Measuring temperature based on the expansion or contraction of a material the material being a liquid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K5/00—Measuring temperature based on the expansion or contraction of a material
    • G01K5/32—Measuring temperature based on the expansion or contraction of a material the material being a fluid contained in a hollow body having parts which are deformable or displaceable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K5/00—Measuring temperature based on the expansion or contraction of a material
    • G01K5/32—Measuring temperature based on the expansion or contraction of a material the material being a fluid contained in a hollow body having parts which are deformable or displaceable
    • G01K5/44—Measuring temperature based on the expansion or contraction of a material the material being a fluid contained in a hollow body having parts which are deformable or displaceable the body being a cylinder and piston

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Temperature-Responsive Valves (AREA)
  • Actuator (AREA)

Abstract

962,224. Temperature-responsive actuating- elements. SVENSKA A. B. GASACCUMULATOR. May 3, 1960 [Aug. 28, 1959; Sept. 17, 1959], No. 15493/60. Heading G1D. A thermostat comprises a container 2 filled with a thermally expanding and contracting substance 1 and having one wall formed with a sleeve 18 which protrudes into the substance and is apertured to define a cylinder for guiding a piston 19 located between a yielding region of the substance and a cavity 42 formed inside the sleeve. The material 1 is preferably soft rubber and between it and the piston 19, material having greater wear resisting properties may be arranged (Fig. 4 not shown). Such material may comprise a hard rubber skin, two thin skins with a lubricant between them, or small particles of hard rubber, glass or steel balls. The thermostat shown operates a valve 30 in a hot-water space-heating system. Expansion or contraction of the rubber 1 moves the piston 19 to open or close the valve 30. Pressure in the rubber above a predetermined maximum is relieved by the lifting of a safety piston 16 against the action of a spring 14. Normal pressure in the rubber is maintained by a spring 21. The space 42 within the sleeve 18, the spaces in which the springs 14 and 21 are housed and the space within a tube 25 extending between the valve and the thermostat, are filled with a silicone grease, and these spaces may communicate with one another. The thermostat is set to different temperatures by diminishing or increasing the volume of the rubber container 2 by turning a hand-wheel 8 and consequently moving a piston 3. If the ambient temperature drops unduly causing contraction of the rubber, a spring 4 under the piston 3 acts to maintain a minimum pressure by raising the piston. The cross-sectional shape of the piston 19 may be circular, square or elliptical. In a modification, a cavity may be formed inside the rubber 1. This cavity may be filled with a liquid such as silicone oil and may communicate with a bulb remote from the thermostat. Specifications 962,223 and 962,225 are referred to.
GB1549360A 1959-08-28 1960-05-03 Improvements relating to thermostats Expired GB962224A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE796559 1959-08-28
SE866159 1959-09-17

Publications (1)

Publication Number Publication Date
GB962224A true GB962224A (en) 1964-07-01

Family

ID=26654805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1549360A Expired GB962224A (en) 1959-08-28 1960-05-03 Improvements relating to thermostats

Country Status (4)

Country Link
CH (1) CH390591A (en)
DE (1) DE1423943A1 (en)
DK (1) DK108513C (en)
GB (1) GB962224A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017357A1 (en) * 1979-03-30 1980-10-15 Thermoforce Limited Temperature responsive control device
CN110440942A (en) * 2019-07-06 2019-11-12 长沙米粒智能科技有限责任公司 A kind of temperature measuring equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017357A1 (en) * 1979-03-30 1980-10-15 Thermoforce Limited Temperature responsive control device
CN110440942A (en) * 2019-07-06 2019-11-12 长沙米粒智能科技有限责任公司 A kind of temperature measuring equipment
CN110440942B (en) * 2019-07-06 2024-01-26 长沙米粒智能科技有限责任公司 Temperature measuring device

Also Published As

Publication number Publication date
DE1423943A1 (en) 1969-03-20
CH390591A (en) 1965-04-15
DK108513C (en) 1967-12-27

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