Generator Waterproof Cover with Labyrinth Air Guide
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Solution Overview
Problem
Existing engine-driven power generator apparatus face challenges in securing a sufficient waterproof property, particularly with rainwater entering the case through air intake ports and operation panels, and in balancing waterproofing with operability and cable management.
Innovation Solution
The apparatus incorporates a waterproof cover with a labyrinth-shaped air guide passage and a brush-shaped water separation unit within the cover, which intersects air flows to separate water droplets and mist, preventing their entry into the case while allowing easy operation of the panel and cable management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal net is provided at a considerable height above the opening section to prevent water entry, then waterproofing is improved, but rainwater can still reach the metal net and enter the case
Solution Approach 1:
A water separation unit is introduced as an intermediary component between the opening section and the metal net. This unit includes a water separation plate with through-holes and water collection grooves that intercept and redirect rainwater before it can reach the metal net, while still allowing air to pass through to the engine.
2Reliability
If the air guide passage is formed in a labyrinth shape to separate water from air, then waterproofing is improved, but the separation of water droplets and mist from air is insufficient
Solution Approach 1:
A water separation unit is introduced as an intermediary component within the air guide passage. This unit includes a water separation plate with through-holes and water collection grooves that intercept and redirect rainwater before it can reach the metal net, while still allowing air to pass through to the engine.
Solution Approach 2:
The air guide passage is divided into multiple sections: an opening section, a water separation section with the water separation unit, and a metal net section. This segmentation allows each section to perform its specific function - the water separation section handles liquid water while the metal net handles finer droplets and mist.
3Reliability
If the operation panel is covered with a cover member to enhance waterproof property, then waterproofing is improved, but operability and cable management become difficult
Solution Approach 1:
The waterproof cover is designed to be movable rather than fixed. It can be opened to allow operator access to the operation panel for switching operations and cable management, and closed to provide waterproof protection. This dynamic design resolves the contradiction between waterproofing and ease of operation.
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 enhances the waterproof capability of the engine-driven power generator apparatus by effectively preventing rainwater from entering the case, while maintaining operability and allowing for easy cable output, thus providing a reliable and efficient waterproof solution.
Implementation Method 1
a brush-shaped water separation unit provided in the air guide passage and having a plurality of pins projecting in a direction intersecting flows of air in the air guide passage... as air flowing along the air guide passage passes among the pins of the water separation unit, the air hits the pins, so that water (water droplets and mist) contained in the air can stay on the pins
Implementation Method 2
an air guide passage of a labyrinth shape provided within the waterproof cover and communicating an outside of the waterproof cover with the air intake port... it is possible to separate water (water droplets and mist) from air flowing along the air guide passage
Data Source
AI summary
An engine-driven power generator apparatus, which includes, within a case, an engine and a power generator drivable with the engine, and in which an operation panel is provided on a front cover and an air intake louver for introducing air into the case is provided within the case, includes: a waterproof cover covering the operation panel and the air intake louver; an air guide passage of a labyrinth shape provided within the waterproof cover and communicating the outside of the waterproof cover with the air intake louver; and a brush-shaped water separation unit provided in the air guide passage and having a plurality of pins projecting in a direction intersecting flows of air in the air guide passage.