Dual Drum Brake Heat Dissipation via Segmented Ventilation
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Solution Overview
Problem
Industrial brakes, particularly in high energy applications like wind turbines, face challenges in efficiently absorbing and dissipating heat generated during braking actions, leading to reduced lifespan and increased size and cost due to the need for large brake assemblies or cooling systems.
Innovation Solution
A high energy ventilated dual brake drum design featuring two annular drum parts with radially inward disc members and ventilating apertures, which increases thermal capacity and service life without the need for extensive cooling systems, by acting as an efficient heat sink and allowing for mass support within a compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the brake assembly size is increased to absorb more heat energy, then the heat absorption capacity is improved, but the device complexity and cost increase
Solution Approach 1:
The brake drum is segmented into two separate annular drum parts that can be independently manufactured and assembled. Each drum part contains its own friction elements and can operate semi-independently, allowing the thermal load to be distributed across two separate structures rather than requiring one excessively large single drum.
Solution Approach 2:
The patent transitions from a single-plane friction interface to a multi-dimensional configuration by stacking two annular drum parts at different axial positions. This vertical stacking in the third dimension (axial direction) increases the total friction surface area and heat absorption capacity without increasing the radial or circumferential dimensions of the brake assembly.
2Temperature
If cooling systems are added to dissipate heat, then the heat dissipation efficiency is improved, but the device complexity and cost increase
Solution Approach 1:
The dual annular drum structure serves its own cooling function through its inherent geometry. The two drum parts create natural ventilation channels between them, allowing air flow to pass through and carry away heat without requiring external cooling systems. The structure is self-cooling through passive convection.
Solution Approach 2:
The arrangement of two annular drum parts creates a porous-like ventilation structure with channels and passages between the drums. This allows air to penetrate through the brake assembly, providing distributed cooling across the friction surfaces without requiring solid cooling channels or active cooling systems.
3Volume of moving object
If the brake assembly is made compact, then the space requirement is reduced, but the heat absorption capacity decreases
Solution Approach 1:
The patent utilizes the axial dimension to stack two annular drum parts vertically, effectively packing more friction surface area into a compact radial footprint. This dimensional transition allows the brake to maintain small radial and circumferential dimensions while achieving high heat absorption capacity through the stacked configuration.
Solution Approach 2:
The two annular drum parts are nested in a stacked arrangement where one drum is positioned axially above the other, sharing a common central hub and mounting structure. This nesting approach allows both drums to occupy overlapping radial spaces while maintaining separate friction surfaces, maximizing space utilization.
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 dual brake drum effectively absorbs and dissipates heat energy, extending the lifespan of brake assemblies and reducing size and cost by enhancing thermal capacity and service life, while maintaining compactness and efficiency in high energy applications.
Implementation Method 1
The dual brake drum effectively absorbs and dissipates heat energy, extending the lifespan of brake assemblies and reducing size and cost by enhancing thermal capacity and service life
Implementation Method 2
The first base member has an annular outer surface that is constructed to receive and engage at least a portion of a friction element thereon
Implementation Method 3
high energy ventilated construction brake with dual drum
Data Source
AI summary
An improved energy capacity brake employing a drum structure with dual braking surfaces may be utilized in a wide variety of industrial and commercial applications requiring braking action. The drum includes first and second annular drum parts joined together to provide a dual drum feature for use with a coupling component together forming a drum brake assembly. In an alternate embodiment the drum may be cast with a single disc member having two braking surfaces.