Wheel Mounting Bracket Design for Compact Portable Dehumidifiers
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Solution Overview
Problem
Current dehumidifiers are often bulky, difficult to move, not rugged, and inefficient, making them unsuitable for applications like fire and flood restoration where quick and effective moisture removal is needed.
Innovation Solution
A portable dehumidifier design featuring a compact and rugged cabinet with a pivoting handle, unique wheel mounting brackets that allow wheels to be mounted close to the cabinet, and a fan control method that adjusts speed based on temperature differences between ambient and exhaust temperatures to maintain a minimum delta temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If dehumidifiers are made more compact and portable, then ease of movement is improved, but structural strength and ruggedness may worsen
Solution Approach 1:
The cabinet is divided into multiple wall sections (front, rear, first side, second side walls) that can be separately manufactured and assembled. This segmentation allows each section to be optimized for both strength and portability, with mounting brackets providing modular attachment points for wheels and handles without compromising overall structural integrity.
2Volume of moving object
If wheels are mounted close to the cabinet to reduce size, then compactness is improved, but mounting stability and reliability may worsen
Solution Approach 1:
The mounting bracket extends in multiple dimensions from the cabinet wall, creating a three-dimensional mounting structure that provides both compact wheel placement near the cabinet and sufficient mounting surface area for stable attachment. The bracket's L-shaped configuration allows wheels to be positioned close to the cabinet body while maintaining reliable mounting through extended attachment surfaces.
3Ease of operation
If a pivoting handle is added for portability, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The handle is designed to pivot between a stored position (flush with the cabinet rear wall) and an engaged position (extending outward for gripping). This dynamic configuration allows the handle to provide ease of operation when needed while maintaining a compact, simple appearance when not in use, reducing overall device complexity.
4Productivity
If fan speed is increased to improve dehumidification efficiency, then productivity is improved, but energy consumption increases
Solution Approach 1:
The control system monitors temperature differences between ambient and exhaust air, and adjusts fan speed accordingly. When the temperature difference indicates efficient heat exchange, the fan operates at lower speeds to conserve energy. When performance drops, the fan speed increases to maintain dehumidification efficiency, creating a feedback loop that optimizes the balance between productivity and energy consumption.
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 design results in a more compact, rugged, and efficient dehumidifier that can be easily transported and effectively manage humidity levels, improving performance in challenging environments.
Implementation Method 1
The cam arm includes a spring arm configured to engage with a locking pin coupled to the cabinet, a clearance hole configured to permit the cam arm to clear the locking pin when the pivoting handle is in the stored position, an aperture configured to permit a pivot pin to secure the cam arm to the cabinet, and a compression gap adjacent to the spring arm. The compression gap is configured to permit the spring arm to provide resistance to the pivoting handle during pivoting.
Data Source
AI summary
A portable dehumidifier includes a cabinet and two wheel mounting brackets. Each wheel mounting bracket is configured to secure one of two wheels to the cabinet. Each wheel mounting bracket includes an inside member, a bottom member, a top member, and an outside member. The inside member includes a first axle aperture for one end of an axle. The bottom member includes one or more mounting apertures configured to permit one or more fasteners to couple the wheel mounting bracket assembly to a bottom side of a cabinet. The outside member includes a second axle aperture for another end of the axle. The top member couples the outside member to the inside member and is coupled to an end of the inside member opposite to the bottom member. The top member includes one or more locating pins configured to be inserted into one or more locating apertures in the cabinet.