Elevator machine motor and drive and cooling thereof

• US 8,922,074 B2
• Filed: 06/10/2010
• Issued: 12/30/2014
• Est. Priority Date: 06/09/2008
• Status: Active Grant

• Current Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Original Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Inventors: Gorbounov, Mikhail B., Piech, Zbigniew, Blasko, Vladimir, Marvin, Daryl J., Veronesi, William A., Fedchenia, Igor I., Wang, Jinliang
• Primary Examiner(s): Mok, Alex W
• Application Number:
  US12/797,776
• Publication Number:
  US 20100288586A1
• Time in Patent Office: 1,664 Days
• Field of Search: 310/54, 310/52, 310/64, 165/104.26, 165/185
• US Class Current: 310/54
• CPC Class Codes: B66B 11/0438 with a gearless driving, e.g. integrated sheave, drum or winch in the stator or rotor of the cage motor
• CPC Class Codes: F28D 15/00 Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies F28D17/00, F28D19/00, F28D20/00 take precedence
• CPC Class Codes: F28D 15/0275 Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
• CPC Class Codes: F28F 1/32 the means having portions engaging further tubular elements
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02K 9/225 Heat pipes

Abstract

Heat in a drive system including a motor and a drive is removed using heat pipes in heat exchanging contact with the motor and the drive. The heat conducting element have at least one portion for receiving heat from the motor or the drive, and another portion to transfer heat to a heat exchange device that is spaced from the motor and drive. The heat conducting element may be a heat pipe or a heat spreader element.

Claims

1. Apparatus for reducing heat in a drive system of an elevator including a motor and a drive for providing a source of power for the motor, the apparatus comprising:

at least one heat conducting element in heat exchanging contact with at least one component of the drive system, the at least one heat conducting element having a first portion for receiving heat from the at least one component of the drive system;

the at least one heat conducting element being adapted to transfer heat from the first portion to a second portion spaced from the first portion; and

a heat exchange device proximate the second portion of the at least one heat conducting element for withdrawing heat from the second portion without the use of a fan to cool the at least one component of the drive system;

wherein the heat exchange device is a structural support element of the elevator separate from the motor and the drive that is adapted to exchange heat from the second portion of the at least one heat conducting element at a location spaced from the motor and the drive

wherein the structural support element is a bedplate that structurally supports the motor.

2. The apparatus of claim 1, wherein the drive system is an elevator drive system.

3. The apparatus of claim 1, wherein the motor and the drive are separated from each other in space, and wherein each of the motor and the drive have at least one heat conducting element in heat exchanging contact therewith.

4. The apparatus of claim 1, wherein the motor and the drive are integrated to provide a unitary device for contact with the at least one heat conducting element.

5. The apparatus of claim 1, wherein the at least one heat conducting element is selected from at least one heat pipe and at least one heat spreader element.

6. The apparatus of claim 1, wherein the at least one heat conducting element is selected from at least one of (a) a plurality of thermosyphones, (b) a plurality of heat pipes formed from hollow metal pipes having the first portion for receiving heat from the at least one component of the elevator drive system and the second portion for delivering heat to the heat exchanger device, the heat pipes having liquid-vapor with a two phase mixture and a capillary structure for liquid delivery from the first portion of the pipe to the second portion of the pipe, and (c) a plurality of pipes using nanoparticles to transfer heat from the first portion to the second portion proximate the heat exchange device.