GB1194317A - Defrosting Controller for Electric Refrigerator. - Google Patents

Defrosting Controller for Electric Refrigerator.

Info

Publication number
GB1194317A
GB1194317A GB9184/69A GB918469A GB1194317A GB 1194317 A GB1194317 A GB 1194317A GB 9184/69 A GB9184/69 A GB 9184/69A GB 918469 A GB918469 A GB 918469A GB 1194317 A GB1194317 A GB 1194317A
Authority
GB
United Kingdom
Prior art keywords
thyristor
switch
conductive
electric refrigerator
defrosting
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
GB9184/69A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics 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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Publication of GB1194317A publication Critical patent/GB1194317A/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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F25D21/006—Defroster control with electronic control circuits
    • 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
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values
    • 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
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/122—Sensors measuring the inside temperature of freezer compartments

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)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)

Abstract

1,194,317. Defrosting circuits. MATSUSHITA ELECTRONICS CORP. 20 Feb., 1969 [1 March, 1968], No. 9184/69. Heading H2H. [Also in Division F4] A defrosting control for an electric refrigerator has a thyristor 4 shunted by a diode 11 and capacitor 12, also a voltage divider 13, 8 normally maintaining a transistor 5 non-conductive. On closure of a manual or time switch 14, the transistor and thyristor are rendered conductive, the shunting effect of the thyristor across switch 14 maintaining the circuit conductive after switch 14 has opened, until the resistance of a thermistor 7 measuring freezer temperature drops to a low value indicative that the frost has melted. A switch 15 may be closed instantaneously to terminate operation of the circuit. The thyristor 4 may control a heater 3 or the operation of a valve admitting hot gas to the freezer.
GB9184/69A 1968-03-01 1969-02-20 Defrosting Controller for Electric Refrigerator. Expired GB1194317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43013925A JPS4844421B1 (en) 1968-03-01 1968-03-01

Publications (1)

Publication Number Publication Date
GB1194317A true GB1194317A (en) 1970-06-10

Family

ID=11846745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9184/69A Expired GB1194317A (en) 1968-03-01 1969-02-20 Defrosting Controller for Electric Refrigerator.

Country Status (6)

Country Link
US (1) US3578754A (en)
JP (1) JPS4844421B1 (en)
FR (1) FR2002999A1 (en)
GB (1) GB1194317A (en)
NL (1) NL148165B (en)
SE (1) SE343134B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135143A (en) * 1983-02-01 1984-08-22 Ti Russell Hobbs Ltd Electric heating appliance

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5121422U (en) * 1974-07-29 1976-02-17
US4142374A (en) * 1977-09-16 1979-03-06 Wylain, Inc. Demand defrost time clock control circuit
US4215554A (en) * 1978-05-30 1980-08-05 General Electric Company Frost control system
US4305259A (en) * 1980-04-03 1981-12-15 Eaton Corporation Frost sensor employing self-heating thermistor as sensor element
US5737232A (en) * 1997-02-04 1998-04-07 Maytag Corporation Power supply arrangement for a control circuit
US9583456B2 (en) 2013-11-22 2017-02-28 Invensas Corporation Multiple bond via arrays of different wire heights on a same substrate
CN113970165B (en) * 2020-07-24 2022-11-04 广东美的制冷设备有限公司 Air conditioner, radiation control method and device thereof, and computer readable storage medium

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248892A (en) * 1963-02-25 1966-05-03 Texas Instruments Inc Refrigeration control regulating temperature and frost build-up
US3222882A (en) * 1964-01-17 1965-12-14 Texas Instruments Inc Refrigeration temperature and frost control
US3363429A (en) * 1966-03-11 1968-01-16 Motorola Inc Temperature control circuit for refrigeration system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135143A (en) * 1983-02-01 1984-08-22 Ti Russell Hobbs Ltd Electric heating appliance

Also Published As

Publication number Publication date
US3578754A (en) 1971-05-18
DE1909448A1 (en) 1969-10-09
SE343134B (en) 1972-02-28
FR2002999A1 (en) 1969-11-07
NL148165B (en) 1975-12-15
DE1909448B2 (en) 1975-06-19
NL6903192A (en) 1969-09-03
JPS4844421B1 (en) 1973-12-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee