Motor stator cooling with dual coolant two-phase heat exchanger

Patent metadata

Field	Value
Publication number	US-2016178285-A1
Application number	US-201414573785-A
Country	US
Kind code	A1
Filing date	Dec 17, 2014
Priority date	Dec 17, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

A mist cooling system that includes a casing and a liquid inlet. The casing is configured to receive a liquid flow from a source through the liquid inlet and then provide the liquid flow as a mist to a housing of a motor so as to increase a cooling of the motor and prevent any failure of the motor due to overheating.

First claim

What is claimed is:

1 . A mist cooling system, comprising:
a casing comprising a first end, a second end, and at least one perforation at the first end; and a liquid inlet coupled to the casing and configured to receive a liquid flow from a source and to provide the liquid flow to the casing, wherein the at least perforation is configured to output a mist from the liquid flow.

2 . The mist cooling system of claim 1 , wherein the first end is configured at an angle to provide a low pressure zone at the first end, and wherein the low pressure zone draws the liquid flow from the at least one perforation as the mist.

3 . The mist cooling system of claim 1 , wherein the first end is configured at an angle to receive an air flow at a first velocity, and wherein the air flow drives the mist from the first end to the second end.

4 . The mist cooling system of claim 1 , wherein the casing envelops a portion of a motor housing, and wherein an air flow is provided within a gap between the motor housing and the casing.

5 . The system of claim 1 , wherein the at least one perforation is a plurality of perforations equally and circumferentially separated along an interior of the casing.

6 . The system of claim 1 , wherein the at least one perforation is a geometric shape with a surface area corresponding to a flow rate of the mist.

7 . The system of claim 1 , wherein the mist cooling system is incorporated into an environmental control system.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Pal Debabrata
• Legros Craig R

Classifications

• B64D2013/0618

  with arrangements for reducing or managing bleed air, using another air source, e.g. ram air · CPC title

• B64D13/06 Primary

  the air being conditioned (pressurising B64D13/02) · CPC title

• B64D2013/0644

  including electric motors or generators · CPC title

• H02K9/14

  wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle · CPC title

• H02K9/06

  with fans or impellers driven by the machine shaft · CPC title