Self-Regulating Fan Vent Structure for Drip-Proof Airflow
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Solution Overview
Problem
Existing fan systems are vulnerable to foreign objects, such as water droplets, entering the housing through vent ports, which can lead to abnormalities like short circuits in electronic devices.
Innovation Solution
A fan drip-proof structure comprising a housing with open-close members and regulation members that adjust the vent port opening based on air flow, using wind force to control the entry of foreign objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the vent port is exposed to the outside for ventilation, then air flow is improved, but foreign objects such as water droplets can enter the housing
Solution Approach 1:
The vent port is made dynamic through the open-close member that can switch between open and closed states. The member responds to air flow velocity by opening when air flow is strong (providing ventilation) and closing when air flow is weak (preventing foreign object entry). This dynamic adaptation resolves the contradiction between maintaining air flow and preventing harmful factors.
Solution Approach 2:
The open-close member operates autonomously based on the air flow conditions without external control. The member uses the air flow itself as the actuating force to open or close the vent port, creating a self-regulating system that automatically balances ventilation needs with protection against foreign objects.
2Speed
If the open-close member fully opens the vent port for maximum ventilation, then air flow is improved, but the risk of foreign object entry increases
Solution Approach 1:
The regulation member controls the degree of opening of the vent port by adjusting the position or angle of the open-close member. Instead of allowing full opening, the regulation member limits the opening to an optimal range that provides sufficient air flow while maintaining adequate protection against foreign objects. This parameter optimization resolves the contradiction between air flow and drip-proof performance.
3Reliability
If the vent port is kept closed to prevent foreign objects, then drip-proof performance is improved, but ventilation is reduced
Solution Approach 1:
The system dynamically switches between closed and open states based on real-time air flow conditions. When air flow velocity exceeds a threshold, the open-close member opens the vent port to restore ventilation. When air flow is insufficient, the member closes the port to maintain drip-proof performance. This dynamic response resolves the contradiction between protection and ventilation.
Solution Approach 2:
The open-close member uses air flow velocity as feedback to control its state. The member continuously responds to changes in air flow conditions, opening when flow increases and closing when flow decreases. This feedback mechanism ensures that the vent port state is always appropriate for current operating conditions, balancing drip-proof performance and air flow.
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
Prevents foreign objects from entering the fan housing while maintaining effective ventilation and preventing air backflow, thus ensuring drip-proof and dust-proof performance without complicating or enlarging the configuration.
Implementation Method 1
The one or more open-close members open and close a vent port formed on the housing in response to a wind force of an air flow of the fan
Data Source
AI summary
A fan drip-proof structure of an embodiment includes a housing, one or more open-close members, and a regulation member. The housing accommodates a fan. The one or more open-close members open and close a vent port formed on the housing in response to a wind force of an air flow of the fan. The regulation member regulates an open degree of the vent port by the open-close member.