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GB640849A - Improvements relating to indicators or controls for eutectic coolers - Google Patents

Improvements relating to indicators or controls for eutectic coolers

Info

Publication number
GB640849A
GB640849A GB23759/48A GB2375948A GB640849A GB 640849 A GB640849 A GB 640849A GB 23759/48 A GB23759/48 A GB 23759/48A GB 2375948 A GB2375948 A GB 2375948A GB 640849 A GB640849 A GB 640849A
Authority
GB
United Kingdom
Prior art keywords
eutectic
electrodes
stabilized
voltage
coolers
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
GB23759/48A
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.)
RALPH ERNEST JOHN SHAVE
Stone J and Co Ltd
J Stone and Co Ltd
Original Assignee
RALPH ERNEST JOHN SHAVE
Stone J and Co Ltd
J Stone and 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 RALPH ERNEST JOHN SHAVE, Stone J and Co Ltd, J Stone and Co Ltd filed Critical RALPH ERNEST JOHN SHAVE
Priority to GB23759/48A priority Critical patent/GB640849A/en
Priority to FR992386D priority patent/FR992386A/en
Priority to DEP52467A priority patent/DE803300C/en
Publication of GB640849A publication Critical patent/GB640849A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/005—Devices using other cold materials; Devices using cold-storage bodies combined with heat exchangers
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Cultivation Of Plants (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

640,849. Automatic temperature control systems. STONE & CO., Ltd., J., and SHAVE, R. E. J. Sept. 9, 1948, No. 23759. [Class 38 (iv)] [Also in Group XXXVI] Apparatus for detecting the condition of a eutectic cooler comprises two electrodes 5, 6 in contact with the eutectic, supplied with a stabilized A.C. voltage, and a meter 19 for measuring the resistance between them. The A.C. voltage is derived from a D.C. source 25, Fig. 1, by a vibrator 24, and stabilized by a network of resistors 21 and barretters 22, or may be obtained from a hand-driven, slipping-clutch generator. The current flow between the electrodes may be used to effect the operation of a relay 30 (Fig. 4, not shown), to operate refrigerating machinery and a warning device. The electrodes 5, 6 consist of a non-corrosive metal stem 7, Fig. 2, in an insulated bush 9, secured by a nut 15 inside a terminal box 13 which is welded to the main casing 1.
GB23759/48A 1948-09-09 1948-09-09 Improvements relating to indicators or controls for eutectic coolers Expired GB640849A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB23759/48A GB640849A (en) 1948-09-09 1948-09-09 Improvements relating to indicators or controls for eutectic coolers
FR992386D FR992386A (en) 1948-09-09 1949-08-10 Improvements to indication or control devices for eutectic refrigerators
DEP52467A DE803300C (en) 1948-09-09 1949-08-20 Display device for eutectic coolers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23759/48A GB640849A (en) 1948-09-09 1948-09-09 Improvements relating to indicators or controls for eutectic coolers

Publications (1)

Publication Number Publication Date
GB640849A true GB640849A (en) 1950-07-26

Family

ID=10200855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23759/48A Expired GB640849A (en) 1948-09-09 1948-09-09 Improvements relating to indicators or controls for eutectic coolers

Country Status (3)

Country Link
DE (1) DE803300C (en)
FR (1) FR992386A (en)
GB (1) GB640849A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744388A (en) * 1954-08-09 1956-05-08 Dole Refrigerating Co Refrigerating car structure

Also Published As

Publication number Publication date
DE803300C (en) 1951-04-02
FR992386A (en) 1951-10-17

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