GB1150138A - Switchless electrothermal actuator with constant electrical current input. - Google Patents

Switchless electrothermal actuator with constant electrical current input.

Info

Publication number
GB1150138A
GB1150138A GB3618167A GB3618167A GB1150138A GB 1150138 A GB1150138 A GB 1150138A GB 3618167 A GB3618167 A GB 3618167A GB 3618167 A GB3618167 A GB 3618167A GB 1150138 A GB1150138 A GB 1150138A
Authority
GB
United Kingdom
Prior art keywords
valve
fluid
actuator
casing
sleeve
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
GB3618167A
Inventor
John Frederick Sherwood
Andrew Walter Zmuda
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.)
Thermal Hydraulics Corp
Original Assignee
Thermal Hydraulics Corp
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 Thermal Hydraulics Corp filed Critical Thermal Hydraulics Corp
Priority to GB3618167A priority Critical patent/GB1150138A/en
Publication of GB1150138A publication Critical patent/GB1150138A/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

Landscapes

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

Abstract

1,150,138. Valves. THERMAL HYDRAULICS CORP. 7 Aug., 1967, No. 36181/67. Heading F2V. [Also in Division G1] A temperature responsive actuator for a valve 45 comprises a casing 10 containing a chamber 11 filled with thermally expansible wax adapted to be heated by a heating element 12 through which a constant electrical current is passed, the wax moving a piston shaft 16, 22 to actuate the valve, the casing 10 being surrounded by a housing 30 to provide an annular space 34 through which a cooling fluid is passed, this fluid ensuring that overheating of the actuator does not occur. In the arrangement shown, the cooling fluid is the same as the fluid controlled by the valve 45, the effect of the fluid flow from the valve inlet 39 to the outlet 41 causing a suction effect in a passageway 36 thus drawing a by-pass cooling flow through the space 34. The valve 45 is provided with a seat 44 and a spring 46 urges the valve towards its closed position. The shaft of the actuator acts through a bearing 50 to open the valve, its movement being guided by a stem 51 sliding in a sleeve 52. The end of the sleeve 52 functions as a limit stop for the valve. The sleeve 52 is formed integral with a cap 48 which is also provided with an arcuate vane 54 for controlling the velocity of fluid flowing through the valve. The position of the vane can be adjusted by turning the cap in its screw-threaded mounting and set by tightening a set-screw 55. Provision for manual operation of the valve 45 is accommodated by mounting the casing 10 in a ring 24 which may be reciprocated to open and close the valve by manual rotation of a screw-threaded pusher member 31. Electrical wires 14 connected to the element 12 pass through a central bore in the member 31. If desired, a separate cooling fluid may be provided for the actuator, the valve being used to control flow of another fluid, e.g. steam, in a separate conduit.
GB3618167A 1967-08-07 1967-08-07 Switchless electrothermal actuator with constant electrical current input. Expired GB1150138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3618167A GB1150138A (en) 1967-08-07 1967-08-07 Switchless electrothermal actuator with constant electrical current input.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3618167A GB1150138A (en) 1967-08-07 1967-08-07 Switchless electrothermal actuator with constant electrical current input.

Publications (1)

Publication Number Publication Date
GB1150138A true GB1150138A (en) 1969-04-30

Family

ID=10385719

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3618167A Expired GB1150138A (en) 1967-08-07 1967-08-07 Switchless electrothermal actuator with constant electrical current input.

Country Status (1)

Country Link
GB (1) GB1150138A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001132A (en) * 1977-07-14 1979-01-24 Daimler Benz Ag Injection pump having means for the adjustment of the no-load setting
GB2137317A (en) * 1983-01-21 1984-10-03 Schrack Elektronik Ag Control valve for radiators

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001132A (en) * 1977-07-14 1979-01-24 Daimler Benz Ag Injection pump having means for the adjustment of the no-load setting
GB2001132B (en) * 1977-07-14 1982-03-17 Daimler Benz Ag Injection pump having means for the adjustment of the no-load setting
GB2137317A (en) * 1983-01-21 1984-10-03 Schrack Elektronik Ag Control valve for radiators

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee