Integrated Cooling Sleeve Housing for Compact Motor Thermal Control

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Solution Overview

Problem

Existing rotary mechanical systems, such as electric motors and compressors, require a separate cooling sleeve that increases assembly time and cost and housing size, which is inefficient.

Innovation Solution

Integrate cooling channels directly into the housing of the rotary mechanical system, eliminating the need for a separate cooling sleeve by machining channels within the housing to allow cooling fluid to flow and draw heat away from the motor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a separate cooling sleeve is used to cool the motor, then the motor cooling function is achieved, but the assembly time and housing size increase

Engineering Contradiction:
Improvemotor temperatureVSAvoidassembly complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The cooling channels are integrated directly into the housing structure, merging the housing and cooling sleeve into a single component. This eliminates the need for separate assembly of a cooling sleeve, reducing assembly time and complexity while maintaining the motor cooling function through refrigerant flow through the integrated channels

Inventive Principle:
Principle #5Merging (Combining)

2Temperature

If a separate cooling sleeve is used to cool the motor, then the motor cooling function is achieved, but the housing size increases

Engineering Contradiction:
Improvemotor temperatureVSAvoidhousing volume
Core Design Contradiction:
TemperatureVSVolume of stationary object

Solution Approach 1:

The cooling channels are formed as integral parts of the housing through machining operations, eliminating the need for an additional cooling sleeve component. This integration reduces the overall housing volume by removing redundant structural elements while preserving the cooling channels' ability to dissipate motor heat

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If cooling channels are integrated into the housing, then assembly time and housing size are reduced, but manufacturing complexity increases

Engineering Contradiction:
Improveassembly complexityVSAvoidhousing manufacturing
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

The cooling channels are machined into the housing during the initial manufacturing process before final assembly. This preliminary action incorporates the cooling function into the housing fabrication stage, eliminating subsequent assembly steps and reducing overall assembly complexity despite requiring precision machining operations

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This integration reduces assembly time and housing size while effectively cooling the motor, prolonging its life and increasing efficiency.

Implementation Method 1

a plurality of cooling channels defined by a plurality of spaces between an external surface of the motor and an inner surface of the housing, wherein the plurality of cooling channels are configured to receive a refrigerant to cool the motor

Methodology Applied
Scientific EffectHeat transfer: Heat Exchanger

Data Source

PatentEP4622070A1Integrated two phase cooling sleeve
Publication Date: 2025.09.24 HONEYWELL INTERNATIONAL INC
  • EP4622070A1 patent drawingFigure 1
  • EP4622070A1 patent drawingFigure 2
  • EP4622070A1 patent drawingFigure 3

AI summary

In some examples, a rotary mechanical system, includes a motor, a housing, and a plurality of cooling channels. The housing at least partially encloses one or more components of the motor. The plurality of cooling channels are defined by a plurality of spaces between an external surface of the motor and an inner surface of the housing, and are configured to receive a refrigerant to cool the motor.