PSC motor having multiple speed and voltage configurations

Patent metadata

Field	Value
Publication number	US-10284130-B2
Application number	US-201715457604-A
Country	US
Kind code	B2
Filing date	Mar 13, 2017
Priority date	Mar 13, 2017
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A permanent split capacitor (PSC) motor includes a stator defining an axis of rotation and a rotor disposed adjacent the stator. The stator includes a start winding, a capacitor electrically coupled in series with the start winding, a first plurality of windings, and a second plurality of windings. At least one winding of the first plurality of windings is energized in parallel with at least one winding of the second plurality of windings at a first voltage and in series with the at least one winding of the second plurality of windings at a second voltage. The first and second pluralities of windings are energized to produce a plurality of motor speeds. The rotor rotates relative to the stator about the axis of rotation at a selected one of the plurality of motor speeds induced at least partially by a magnetic output of the windings of the stator.

First claim

What is claimed is:

1. A permanent split capacitor (PSC) motor comprising:
a stator defining an axis of rotation, said stator comprising:
a start winding;
a capacitor electrically coupled in series with said start winding;
a first plurality of windings; and
a second plurality of windings electrically coupled to said first plurality of windings, wherein at least one winding of said first plurality of windings is configured to be energized in parallel with at least one winding of said second plurality of windings at a first voltage and configured to be energized in series with the at least one winding of said second plurality of windings at a second voltage, wherein said second voltage is greater than said first voltage, wherein said first plurality of windings and said second plurality of windings are configured to be energized to produce a plurality of motor speeds; and

a rotor disposed adjacent said stator and configured to rotate relative to said stator about the axis of rotation at a selected one of the plurality of motor speeds induced at least partially by a magnetic output of said start winding, said first plurality of windings, and said second plurality of windings.

2. A PSC motor in accordance with claim 1 , wherein the first voltage is between 105 volts (V) and 125 V, inclusively, and wherein the second voltage is between 195 V and 245 V, inclusively.

3. A PSC motor in accordance with claim 1 , wherein said stator comprises a main winding and two extended main windings including said first plurality of windings and said second plurality of windings, said main winding and said two extended main windings configured to produce the plurality of motor speeds, including a first motor speed, a second motor speed, and a third motor speed.

4. A PSC motor in accordance with claim 3 , wherein a first extended main winding of said two extended main windings comprises a center terminal.

5. A PSC motor in accordance with Claim l further comprising a plurality of wiring leads electrically coupled to said start winding and said main winding, the plurality of wiring leads configured to be coupled to a control circuit in a selectable one of a first wiring configuration associated with the first voltage and a second wiring configuration associated with the second voltage.

6. A PSC motor in accordance with claim 5 further comprising an installation guide configured to provide instructions to couple the plurality of wiring leads in the first wiring configuration and the second wiring configuration, wherein said installation guide is one of integrated with said PSC motor and separate from said PSC motor.

7. A PSC motor in accordance with claim 5 , wherein said plurality of wiring leads comprises:
four wiring leads associated with a first motor speed of the plurality of motor speeds;
three wiring leads associated with a second motor speed of the plurality of motor speeds;
three wiring leads associated with a third motor speed of the plurality of motor speeds; and
a wiring lead coupled to said capacitor.

8. A PSC motor in accordance with claim 5 , wherein said stator comprises a plurality of rotation terminals, wherein a first subset of said plurality of wiring leads is coupled to said plurality of rotation terminals in one of a clockwise configuration and a counter-clockwise configuration, wherein said rotor is configured to be rotated in a clockwise direction when said first subset is coupled in a clockwise configuration and configured to be rotated in a counter-clockwise configuration when said first subset is coupled in a counter-clockwise configuration.

9. A permanent split capacitor (PSC) motor comprising:
a stator defining an axis of rotation, said stator comprising:
a start winding;
a capacitor electrically coupled in series with said start winding;
a plurality of main windings electrically coupled to said start winding and said capacitor, said plurality of main windings comprising a first center terminal; and
a first plurality of extended main windings comprising a second center terminal, wherein said plurality of main windings and said first plurality of extended main windings are configured to be energized at one of a first voltage and a second voltage to produce a first motor speed and a second motor speed, wherein said second voltage is greater than said first voltage; and

a rotor disposed adjacent said stator and configured to rotate relative to said stator about the axis of rotation at a selected one of the first motor speed and the second motor speed induced at least partially by a magnetic output of said start winding, said plurality of main windings, and said first plurality of extended main windings.

10. A PSC motor in accordance with claim 9 , wherein said stator further comprises a second plurality of extended main windings, wherein said plurality of main windings, said first plurality of extended main windings, and said second plurality of extended main windings are configured to be energized to provide the first motor speed, the second motor speed, and a third motor speed.

11. A PSC motor in accordance with claim 9 , wherein said plurality of main windings comprises a first winding and a second winding coupled to said first winding at said first center terminal, wherein said first winding and said second winding are configured to be energized in parallel at the first voltage via the first center terminal and are configured to be energized in series at the second voltage.

12. A PSC motor in accordance with claim 9 further comprising a plurality of wiring leads coupled to said start winding, said plurality of main windings, and said first plurality of extended main windings, said plurality of wiring leads configured to be coupled to a control circuit in a first wiring configuration associated with the first voltage and a second wiring configuration associated with the second voltage for energizing said stator.

13. A PSC motor in accordance with claim 12 further comprising a housing defining an internal chamber, said stator and said rotor at least partially disposed within the internal chamber, wherein said housing comprises an installation guide configured to provide instructions to couple said plurality of wiring leads to the control circuit in the first wiring configuration and the second wiring configuration.

14. A PSC motor in accordance with claim 13 , wherein said housing defines a first lead exit and a second lead exit, wherein said plurality of wiring leads includes a first subset of wiring leads associated with the first wiring configuration that extends through the first lead exit and a second subset of wiring leads associated with the second wiring configuration that extends through the second lead exit.

15. A PSC motor in accordance with claim 12 , wherein each of said plurality of wiring leads includes an insulation layer having a radial height less than 1/16 inches.

16. A PSC motor in accordance with claim 12 , wherein said plurality of wiring leads comprises:
four wiring leads associated with a first motor speed of the plurality of motor speeds;
three wiring leads associated with a second motor speed of the plurality of motor speeds;
three wiring leads associated with a third motor speed of the plurality of motor speeds; and
a wiring lead coupled to said capacitor.

17. A PSC motor in accordance with claim 9 , wherein said stator further comprises a protector coupled to said first center terminal, said protector configured to electrically disconnect said main winding when an overcurrent condition occurs.

18. A heating,

Assignees

• Regal Beloit America Inc

Inventors

• Nelson Andrea Lena
• Manz Lester Benjamin
• Stout Bryan James
• Wilson Harry Robert
• Garrido Aurelio Santiago
• Martinez Juan Manuel Amaya
• Arias Fredier Ruiz

Classifications

• F24F11/77

  by controlling the speed of ventilators · CPC title

• H02P25/04

  Single phase motors, e.g. capacitor motors · CPC title

• H02P25/18 Primary

  with arrangements for switching the windings, e.g. with mechanical switches or relays · CPC title

• F24F11/88

  Electrical aspects, e.g. circuits · CPC title

• H02P1/44

  by phase-splitting with a capacitor · CPC title