Side Channel Compressor Thermal Management
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Solution Overview
Problem
Side channel compressors lack effective cooling solutions, leading to potential overheating issues due to the lack of thermal insulation between air passages, which can affect the performance and efficiency of the compressor and associated motor.
Innovation Solution
A compact design combining intake and exhaust ducts in a common housing with thermal insulation, along with an aerodynamically mounted cooling fan directly driven by the electric motor, ensures efficient cooling by decoupling hot exhaust air from cold intake air and utilizing cooling fins and air ducts for temperature equalization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the housing contains both intake and exhaust ducts in a common structure, then device compactness is improved, but thermal insulation between air passages deteriorates causing excessive heating of intake air
Solution Approach 1:
The housing is segmented into thermally isolated zones using insulation material. The insulation divides the common housing into separate thermal environments for the intake duct and exhaust duct, preventing heat transfer between them while maintaining structural integration.
Solution Approach 2:
Thermal insulation material acts as an intermediary substance between the hot exhaust air and cold intake air. This intermediary layer blocks thermal energy transfer, allowing both ducts to coexist in the same housing without thermal interference.
2Temperature
If thermal insulation is added between air passages, then thermal decoupling is improved, but device complexity increases
Solution Approach 1:
The housing structure serves multiple functions simultaneously: it provides mechanical support, contains both intake and exhaust ducts, and through integrated insulation, provides thermal isolation. The insulation material is incorporated into the housing design itself, making the housing a multi-functional component that combines structural and thermal management roles.
3Use of energy by moving object
If the cooling fan is mounted aerodynamically aligned with the motor axis, then cooling efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The cooling fan is positioned asymmetrically relative to the motor housing, with its rotational axis deliberately aligned with the motor's rotational axis. This asymmetric mounting arrangement on one side of the motor allows for optimized aerodynamic flow alignment while simplifying the mounting structure compared to symmetric multi-directional alignment requirements.
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 configuration effectively reduces overheating, enhances cooling efficiency, and maintains performance by ensuring adequate thermal insulation and airflow alignment with the motor and compressor axis, thereby improving the overall thermal management of the side channel compressor system.
Implementation Method 1
The cooling air fan flanged axially to the electric motor is provided for improved cooling of the motor and side channel compressor in particular. This is driven directly by the electric motor and in a preferred arrangement of the cooling air fan on the side of the electric motor facing away from the side channel compressor causes a flow of cooling air aligned along the impeller and motor axis.
Implementation Method 2
Adequate thermal insulation between the air passages is provided by a possible insulation of the blow-out duct, in any case. This counteracts heating, in particular excessive heating of the intake air in the intake duct by the blown air in the exhaust duct.
Implementation Method 3
In one development, the motor, compressor and electronics are connected to one another in a heat-conducting manner in order to create temperature equalization.
Data Source
Figure 1
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Figure 3
AI summary
The invention relates to a side channel blower (1) with an intake channel (14) and a discharge channel (15). In order to advantageously improve a side channel blower of the type in question with a simple and as compact a design as possible, it is proposed that the intake channel (14) and the discharge channel (15) are combined in a common housing (9), with a common partition (13) separating channels (11) and (12), wherein in any case the discharge channel (15) has insulation (18) and the intake and discharge channels (14, 15) are arranged in parallel, wherein a replaceable switching insert (22, 22') is further associated with a connection area (21) to the side channel blower (1).