Electric Tool One-Way Valve Layout for Liquid Ingress Prevention
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Solution Overview
Problem
Existing electric working machines face issues with liquid discharge and entry into critical components due to communication openings, leading to potential damage from liquid ingress.
Innovation Solution
Incorporation of one-way valves at communication openings that open and close based on the machine's orientation, allowing liquid discharge while preventing ingress, facilitated by gravity-driven operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communication opening is provided in the partition wall to allow liquid discharge from the first space to the second space, then liquid can be discharged from the first space, but liquid in the second space may enter the first space through the communication opening and contact the electrical component
Solution Approach 1:
A one-way valve is introduced as an intermediary element at the communication opening. This valve allows liquid to pass from the first space to the second space while preventing liquid from the second space from entering the first space. The valve acts as a selective mediator that permits flow in one direction while blocking flow in the opposite direction, thus resolving the contradiction between enabling liquid discharge and preventing liquid ingress.
Solution Approach 2:
The communication opening is made dynamic through the one-way valve mechanism rather than being a static open passage. The valve dynamically adjusts its state based on pressure differential - opening to allow discharge when liquid is in the first space, and closing to prevent ingress when liquid is in the second space. This dynamic behavior enables the system to adapt to different liquid positions and prevent harmful liquid entry.
2Object-affected harmful factors
If a one-way valve is disposed at the communication opening to prevent liquid entry, then liquid ingress is suppressed, but the device complexity increases
Solution Approach 1:
The one-way valve is designed as a passive self-service component that automatically opens and closes based on the pressure differential across it, without requiring external control systems, actuators, or power sources. The valve uses the natural pressure differences created by liquid position to control its own operation - when liquid is in the first space, pressure pushes the valve open for discharge; when liquid is in the second space, pressure pushes the valve closed for prevention. This self-service mechanism adds minimal complexity while effectively preventing liquid ingress.
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
Effectively discharges liquid from internal spaces to external environments and prevents liquid entry into critical components by simply changing the machine's orientation, ensuring component protection and efficient liquid management.
Implementation Method 1
one-way valves at communication openings that open and close based on the machine's orientation, allowing liquid discharge while preventing ingress, facilitated by gravity-driven operation
Data Source
AI summary
An electric working machine may include: an electrical component; a first space in which the electrical component is disposed; a partition wall separating the first space from a second space different from the first space, the partition wall including a first communication opening communicating the first space and the second space; and a first one-way valve disposed at the first communication opening.