GB849299A - Improvements relating to split-phase electric motors - Google Patents

Improvements relating to split-phase electric motors

Info

Publication number
GB849299A
GB849299A GB19983/58A GB1998358A GB849299A GB 849299 A GB849299 A GB 849299A GB 19983/58 A GB19983/58 A GB 19983/58A GB 1998358 A GB1998358 A GB 1998358A GB 849299 A GB849299 A GB 849299A
Authority
GB
United Kingdom
Prior art keywords
switch
motor
strip
energized
heater coil
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
GB19983/58A
Inventor
Bernard Georges Smith
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.)
General Motors France SA
Original Assignee
General Motors France SA
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 General Motors France SA filed Critical General Motors France SA
Priority to GB19983/58A priority Critical patent/GB849299A/en
Priority to FR797984A priority patent/FR1227803A/en
Publication of GB849299A publication Critical patent/GB849299A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/002—Structural combination of a time delay electrothermal relay with an electrothermal protective relay, e.g. a start relay
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Stepping Motors (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

849,299. Control of A.C. motors; thermal switches. GENERAL MOTORS, FRANCE. Feb. 11, 1959 [June 23, 1958], No. 19983/58. Classes 38 (3) and 38 (5). Apparatus for continuously reversing a splitphase motor comprises switches K1, K2, K3, provided with normally-engaged contacts 54- 60, 56-84, and 58-62, respectively. When power is switched-on, current passes through switches K1, K3, and the running windings P1, P2, of the motor, a heater coil R1 being energized through the switch K3. At the same time, the starting winding S of the motor is supplied with current through the switch K2. After a predetermined interval, the heater coil R1 causes movement of the bimetallic strip 16 which carries with it an insulation strip 20 and spring abutments 22, 24, 26. Switch K1 is operated at first, under pressure from a toggle spring 32, so that a blade 42 moves to a position in which contact 54 engages contact 66 to break the motor-circuit. The motor comes to rest and a centrifugal switch C closes. The heater R1 remains energized, however, so causing further movement of the strip 16 until switch K2 is operated by a toggle spring 34 which forces a blade 44 to shift to a position in which contact 56 engages contact 86. The heater coil R1 continues to be energized, and further movement of the strip 16 ultimately operates the switch K3, whereupon a blade 46 is moved by toggle spring 36 to engage contacts 58, 68. Under these conditions, the motor re-starts in the reverse direction, and, when a pro-determined speed is reached, the centrifugal switch C disconnects the starting winding. A heater coil R2 is now energized, and this causes a bimetallic strip 18 to move in a direction opposite to the previous movement of the strip 16. Switch K1 operates eventually to disconnect the motor, leaving the heater R2 energized. Subsequently, the switch K2 reverses the connection of the starting winding, and, finally, the switch K3 re-connects the motor to the supply for rotation in the original direction.
GB19983/58A 1958-06-23 1958-06-23 Improvements relating to split-phase electric motors Expired GB849299A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB19983/58A GB849299A (en) 1958-06-23 1958-06-23 Improvements relating to split-phase electric motors
FR797984A FR1227803A (en) 1958-06-23 1959-06-19 Automatic reversing control device for electric motors with repulsion with auxiliary winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19983/58A GB849299A (en) 1958-06-23 1958-06-23 Improvements relating to split-phase electric motors

Publications (1)

Publication Number Publication Date
GB849299A true GB849299A (en) 1960-09-21

Family

ID=10138380

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19983/58A Expired GB849299A (en) 1958-06-23 1958-06-23 Improvements relating to split-phase electric motors

Country Status (2)

Country Link
FR (1) FR1227803A (en)
GB (1) GB849299A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283325A2 (en) * 1987-03-19 1988-09-21 Tai-Her Yang Reversible drives, and ventilating fans employing such drives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283325A2 (en) * 1987-03-19 1988-09-21 Tai-Her Yang Reversible drives, and ventilating fans employing such drives
EP0283325A3 (en) * 1987-03-19 1989-04-26 Tai-Her Yang Reversible drives, and ventilating fans employing such drives

Also Published As

Publication number Publication date
FR1227803A (en) 1960-08-24

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