Ventilation Channel in Rotary Piston Blowers for Thermal Load Relief
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Solution Overview
Problem
Existing rotary piston compressors/pumps/blowers face challenges in efficiently managing thermal loads on components like bearings and shafts, and maintaining vacuum levels during compression phases.
Innovation Solution
Incorporating a ventilation channel that allows temporary fluid communication between the working chamber and the environment, reducing thermal loads by introducing air with lower energy levels during compression phases, and maintaining vacuum levels by controlling air supply through the ventilation channel opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a rotary piston compressor/pump/blower operates during compression phases, then compression function is achieved, but thermal loads increase on components like bearings and shafts
Solution Approach 1:
The patent extracts heat from the system by introducing ambient air through a ventilation channel during compression phases. The ventilation channel opening allows cooler air to enter the working chamber, directly removing thermal energy from the compressed gas and cooling components like bearings and shafts that would otherwise experience excessive thermal loads.
Solution Approach 2:
Ambient air acts as an intermediary substance that transfers thermal energy away from the compression system. The ventilation channel introduces this intermediary air into the working chamber, where it absorbs heat from the compressed gas and hot components, then exits through the ventilation channel, effectively mediating heat removal without interfering with the compression function.
2Temperature
If air is introduced into the working chamber during compression, then thermal loads are reduced, but vacuum levels may be disturbed
Solution Approach 1:
The ventilation channel opening is designed to be dynamically controllable, allowing the system to adjust air intake based on operational requirements. During compression phases, the opening can be activated to reduce thermal loads, while during vacuum phases, it can be closed or restricted to maintain vacuum levels. This dynamic control resolves the contradiction between cooling needs and vacuum maintenance.
Solution Approach 2:
The ventilation channel operates periodically rather than continuously, being activated during compression phases when thermal load reduction is needed and deactivated during vacuum phases when maintaining low pressure is critical. This periodic operation allows the system to alternately prioritize thermal management and vacuum maintenance based on the operational cycle stage.
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
The solution effectively reduces thermal stresses on components and maintains undisturbed vacuum levels by introducing ambient air, enhancing the efficiency and longevity of the rotary piston compressor/pump/blower.
Implementation Method 1
a ventilation channel (8), which temporarily produces-fluid communication between the working chamber (2) and the environment... reducing thermal loads by introducing air with lower energy levels during compression phases
Data Source
AI summary
A rotary piston compressor/pump/blower includes a housing spatially limiting a working chamber, an intake connection for guiding fluid into the working chamber, a pressure connection for guiding the fluid out of the working chamber, and a rotor assembly having a first rotor rotatably arranged in a first working sub-chamber and a second rotor cooperating with the first rotor and rotatably arranged in a second working sub-chamber. The rotary piston compressor/pump/blower also includes a ventilation channel, formed in the housing and connected to the working chamber via a ventilation channel opening, for the temporally limited introducing of air into the working chamber, wherein the ventilation channel opening is open at least in sections, in particular completely open, in a compression phase.