Cooled motor

• US 8,723,468 B2
• Filed: 04/28/2011
• Issued: 05/13/2014
• Est. Priority Date: 04/28/2011
• Status: Expired due to Fees

• Current Assignee: Aurora Office Equipment Co., Ltd, Shanghai
• Original Assignee: Aurora Office Equipment Limited
• Inventors: O'Rourke, John
• Primary Examiner(s): GLASS, ERICK DAVID
• Application Number:
  US13/096,843
• Publication Number:
  US 20120274256A1
• Time in Patent Office: 1,111 Days
• Field of Search: 318/473, 310/346, 310/12.29, 310/58, 310/62, 310/63
• US Class Current: 318/473
• CPC Class Codes: H02K 9/06 with fans or impellers driven by the machine shaft
• CPC Class Codes: H02K 9/227 Heat sinks

Abstract

A motor having a first portion configured to turn in a forward direction, a second portion coaxially mirrors the first portion; and a central fan between the first and second portions, and forcing air through the portions. A thermoelectric cooler element, thermally coupled to the portion is configured to cool the motor. A motor controller is electrically coupled to the first and second portions, and operates a portion in response to a condition sensed by the motor controller. The condition sensed by the motor controller is a motor torque, a motor speed, a motor casing temperature, or a zoned motor casing temperature. A method includes detecting a motor operational command; selecting a motor operational state using motor portion responsive to the motor command; sensing a heating state of a motor portion; and providing a cooling state to the motor portion responsive to the heating state.

Claims

1. A motor, comprising:

a first portion configured to turn in a direction;

a second portion configured to turn in the direction with the first portion, wherein the second portion coaxially mirrors the first portion; and

at least one central fan disposed between the first portion and the second portion, and configured to force air through a portion of the first portion and the second portion.

2. The motor of claim 1, further comprising:

a thermoelectric cooler element, thermally coupled to at least one of the first or second portions, and configured to cool the respective portion of the motor.

3. The motor of claim 1, further comprising:

a motor controller electrically coupled to at least one of the first portion or the second portion, and configured to operate the at least one of the portion in a predetermined direction in response to a condition sensed by the motor controller.

4. The motor of claim 2, further comprising:

a heat sensor set apart from the thermoelectric cooler element, the thermoelectric cooler element being responsive to the heat sensor.

5. The motor of claim 1, wherein at least two central fans are disposed between the first portion and the second portion and wherein at least two central fans force air into each of the first portion and the second portion when the first and second portions turn in the forward direction.

6. The motor of claim 1, further comprising:

a motor controller electrically coupled to the first portion and to the second portion, and configured to operate at least one of the portion in a predetermined direction in response to a condition of the motor;

a thermoelectric cooler element, thermally coupled to at least one of the first or second portions, and configured to cool a respective portion of the motor;

a heat sensor set apart from the thermoelectric cooler element, the thermoelectric cooler element being responsive to the heat sensor; and

at least two central vane fans disposed between the first portion and the second portion and wherein the a respective one of the two central vane fans force air into a corresponding portions when the first and second portions turn in the forward direction.

7. The motor of claim 6, further comprising an alternating current (AC) electric motor.

8. The motor of claim 6, further comprising a direct current (DC) electric motor.

9. The motor of claim 6, further comprising a brushless electric motor.

10. The motor of claim 6, further comprising a brushed electric motor.

11. A motor, comprising:

a first portion configured to turn in a forward direction or a reverse direction;

a second portion configured to turn in the direction with the first portion, wherein the second portion coaxially mirrors the first portion;

two central vane fans set apart, wherein a respective fan is disposed to force air through a corresponding one of the first portion and the second portion;

a motor controller electrically coupled to at least one of the first portion and the second portion, and configured to operate the at least one of the portions in a predetermined direction in response to a condition sensed by the motor controller.

12. The motor of claim 11, further comprising:

a motor casing surrounding the first portion and the second portion;

a heat spreader thermally coupled to the motor casing,

a thermoelectric cooler element thermally coupled to and removing heat from one of the heat spreader and the motor casing in response to a condition sensed by the motor controller.

13. The motor of claim 11, wherein the condition sensed by the motor controller is one of motor torque or motor speed.

14. The motor of claim 12, wherein the condition sensed by the motor controller is one of motor casing temperature, motor torque, or motor speed.

15. The motor of claim 12, wherein the condition sensed by the motor controller is a motor casing temperature zone.

16. A method of operating a motor, comprises:

detecting a motor operational command;

selecting a motor operational state responsive to the motor operational command using one motor part or another motor part or both;

sensing a heating state of a portion of the motor; and

providing a cooling state to the portion of the motor in response to the heating state.

17. The method of claim 16, further providing:

electing a motor operational state having a power need;

one of energizing or de-energizing one motor part or another motor part or both to meet the power need.

18. The method of claim 17, further comprising an AC motor.

19. The method of claim 17, further comprising a DC motor.

20. The method of claim 16, wherein the motor has a plurality of thermal zones, each of the zones including a heat sensor set apart from a thermoelectric cooling element, and further comprising:

selecting at least one thermal zone; and

regulating the thermal state of the thermal zone responsive to the heat sensor.