Compressor Motor Cooling with Segmented Ventilator Airstreams
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Solution Overview
Problem
Existing compressor assemblies face challenges in efficiently cooling both the electric motor and associated machines with separate cooling requirements, often resulting in a complex and noisy design due to the mixing of cooling airstreams and the need for larger components.
Innovation Solution
A compressor assembly with an air-cooled electric motor featuring a ventilator with radially and axially separated sections to generate and maintain two distinct airstreams, which are kept separate through spatially distinct cross sections and channel separators, allowing for independent cooling of the motor and other machines, and integration of a heat exchanger for direct or indirect cooling of gas fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single ventilator is used to cool both the electric motor and associated machines, then the device complexity is reduced, but the cooling effectiveness for machines with separate cooling requirements deteriorates
Solution Approach 1:
The ventilator is divided into multiple independent sections (first ventilator section and second ventilator section), each responsible for generating a separate airstream. This segmentation allows each section to be optimized for specific cooling requirements while maintaining overall system functionality.
Solution Approach 2:
Different sections of the ventilator are designed with different characteristics to provide localized cooling solutions. The first ventilator section generates an first airstream optimized for motor cooling, while the second ventilator section generates a second airstream optimized for machine cooling, allowing each component to receive appropriately tailored cooling.
2Device complexity
If cooling airstreams are mixed to simplify the system, then the device complexity is reduced, but the noise level increases and cooling performance deteriorates
Solution Approach 1:
The ventilator structure is segmented into distinct sections that generate separate airstreams, preventing mixing at the source. This segmentation maintains airstream separation throughout the system, reducing noise from turbulent mixing while simplifying the overall design.
Solution Approach 2:
The ventilator sections act as intermediaries that generate and direct separate airstreams to different components. By maintaining separation through the ventilator structure itself, the system avoids the need for additional mixing prevention mechanisms while reducing noise.
3Reliability
If larger ventilator components are used to cool multiple machines, then the cooling capacity is increased, but the device complexity and component size increase
Solution Approach 1:
The ventilator is segmented into multiple sections, each contributing to the overall cooling capacity. This allows the system to achieve high cooling capacity without requiring a single large component, as multiple smaller sections work together to cool different components simultaneously.
Solution Approach 2:
The multi-section ventilator structure serves multiple functions: cooling the electric motor, cooling associated machines, and maintaining separate cooling streams. This multi-functionality is achieved through the integrated design of the ventilator sections rather than requiring separate cooling systems.
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 solution enables effective cooling of both the electric motor and associated machines with separate airstreams, reducing noise and component size while maintaining compactness and efficiency, as the airstreams can be tailored for specific cooling needs and are kept separate to prevent mixing, enhancing overall cooling performance.
Implementation Method 1
The airstreams enter the respectively associated ventilator sections by way of spatially separated cross sections and emerge from the sections without becoming mixed or without substantial mixing
Implementation Method 2
a heat exchanger for direct or indirect cooling of the gas fluid
Implementation Method 3
The radial fan sections (19) and axial fan sections (20) are used to generate an first and a second cooling air stream
Data Source
AI summary
An air-cooled electric motor is provided, which may be used in a compressor assembly, including a motor unit with a motor housing out of which a drive shaft extends, such that the drive shaft drives a ventilator, the ventilator includes at least two radially and/or axially separated ventilator sections to propel a first airstream as well as at least one other, second airstream that is separate from the first airstream, such that the airstreams are conducted separately on both the inflow side of the ventilator and the outflow side of the ventilator.