Coupling Guard Ventilation With Curved Inlet for Rotor Cooling
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Solution Overview
Problem
Existing ventilation systems for coupling guards in rotating machines are complex and costly due to the use of scoops and baffles, leading to variable results and high production costs.
Innovation Solution
A ventilation system for coupling guards that eliminates the use of scoops, featuring a pipe with a curved second opening that creates a pressure difference for efficient gas flow, reducing material thickness and costs while maintaining rigidity, and comprising a pipe with a straight part and a curved part aligned with the direction of rotation to enhance airflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scoops and baffles are used to improve air circulation in the coupling guard, then ventilation efficiency is improved, but device complexity and production costs increase
Solution Approach 1:
The invention removes the scoops and baffles from the ventilation system, extracting the problematic components that caused complexity and cost issues. The curved opening in the housing alone is sufficient to create effective gas circulation, eliminating the need for additional venting components.
Solution Approach 2:
The housing structure serves multiple functions: it encloses the rotating coupling member for safety and simultaneously creates effective ventilation through its curved opening. The same housing that provides safety enclosure also generates the pressure difference needed for gas flow, eliminating the need for separate ventilation components.
2Temperature
If scoops and baffles are installed to enhance gas flow circulation, then cooling performance is improved, but production costs increase
Solution Approach 1:
The invention extracts the unnecessary scoops and baffles that increased production costs, demonstrating that the curved opening in the housing alone is sufficient to create effective gas circulation and cooling performance.
Solution Approach 2:
The invention changes the geometric parameters of the opening (curved shape with specific orientation) to optimize gas flow and cooling performance, achieving effective ventilation through the housing structure itself without additional components.
3Ease of manufacture
If pipe thickness is reduced to lower material costs, then production costs decrease, but structural rigidity may be compromised
Solution Approach 1:
The curved opening in the pipe distributes mechanical loads more evenly compared to a straight opening, enhancing structural rigidity. This geometric curvature allows the pipe to better resist deformation forces while maintaining thinner walls, achieving both cost reduction and structural integrity.
Solution Approach 2:
The invention optimizes the geometric parameters of the opening (curved shape, orientation angle) to maximize both structural rigidity and material efficiency, allowing thinner pipe walls while maintaining required strength and stiffness.
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 proposed ventilation system achieves efficient cooling of rotating coupling members by creating a circular or spiral gas flow, reducing material thickness, and lowering production costs while ensuring required rigidity and effective heat transfer.
Implementation Method 1
pressure differences inside the coupling guard and resulting from the rotation of the rotating coupling member is used for creating an air flow from the air inlet to the air outlet(s)
Implementation Method 2
ventilation system for cooling down the rotating coupling member and associated enclosure, distributing the heat inside the coupling guard (in order to avoid for instance local high temperature points), and transferring the heat outside of the coupling guard
Data Source
AI summary
A coupling guard for a rotor, which includes a housing for enclosing the rotor in an inner space of the housing, the housing extending longitudinally along a length of the rotor; a ventilation system for creating a flow of gas in the inner space from a gas inlet to a gas outlet that exhausts outside. The gas inlet includes a pipe extending along a pipe longitudinal axis from outside to inside the housing. The pipe includes a first opening located outside the housing and a second opening located inside the housing in the inner space. The pipe has the second opening close to the rotor when the housing encloses the latter. The second opening has a curved edge wherein a projection of the curved edge onto a plane extending parallel to the longitudinal axis of the pipe and parallel to the axis of longitudinal extension is a segment of curve.