Screw-Driven Fan for Heat Dissipation
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Solution Overview
Problem
Conventional screw cooling technologies are complex and costly to manufacture, and their use of cooling liquids can lead to environmental contamination due to potential overflow issues.
Innovation Solution
A screw-driven fan device is designed with a screw, screw nut, and connecting unit, where the screw's rotation drives a fan with a rotary axle and blades, utilizing airflow for heat dissipation without additional power or cooling liquids, simplifying the design and eliminating liquid overflow risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling circulation paths are formed on screw and screw nut seat, then cooling effect is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent extracts the cooling function from the screw and screw nut seat structures by removing the need for integrated cooling passages. Instead, a separate fan device is positioned to directly blow air onto the screw and screw nut, achieving cooling without modifying the original structural components with cooling channels.
Solution Approach 2:
The patent introduces air as an intermediary cooling medium delivered by the fan. This external air flow acts as a mediator between the cooling source and the screw/screw nut assembly, transferring heat away without requiring direct thermal contact or integrated cooling passages in the mechanical components.
2Temperature
If cooling liquid is used for cooling, then heat dissipation is effective, but environmental pollution occurs due to potential overflow
Solution Approach 1:
The patent replaces the liquid-based cooling system with an air-based cooling system. The fan drives air flow to achieve heat dissipation, substituting the mechanical/chemical cooling liquid system with a simpler gaseous cooling medium that poses no environmental contamination risk from overflow.
Solution Approach 2:
The patent changes the cooling medium parameter from liquid to gas (air). This parameter change eliminates the harmful effects associated with liquid cooling media while maintaining effective heat dissipation capability through controlled air flow generated by the fan.
3Temperature
If additional power source is added for fan rotation, then cooling capability is enhanced, but power consumption and circuit complexity increase
Solution Approach 1:
The patent makes the screw serve multiple functions: it acts as both the fastening component and the driving mechanism for the fan. The screw's rotational motion, generated by the screwing action, directly drives the fan blades through the connecting unit, eliminating the need for separate power sources while maintaining cooling capability.
Solution Approach 2:
The system achieves self-service cooling where the act of screwing itself generates the power needed for cooling. The mechanical energy from rotating and advancing the screw is directly converted to drive the fan, creating a self-powered cooling system that requires no external power input.
4Ease of operation
If screw structure is modified with rolling grooves and flanges, then fan driving capability is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the fan driving function from the screw's primary fastening function. The screw retains its basic threaded structure for fastening, while the fan driving capability is achieved through separate structural elements (rolling grooves on screw, linking portion on screw nut, connecting unit) that connect the screw's rotation to the fan blades.
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 solution reduces manufacturing complexity and costs while providing effective heat dissipation without liquid contamination, using natural air circulation to efficiently dissipate heat from the screw nut.
Implementation Method 1
the fan provides a cooling mechanism... heat can be greatly dissipated from the screw nut
Data Source
AI summary
A screw-driven fan device includes a screw, a screw nut, a fan, and a connecting unit. An external edge of the screw has a rolling groove formed thereon and a groove formed alternately with the rolling groove. The screw nut, disposed on the screw, has a linking portion. The fan has a rotary axle with a hole formed thereon for screw passing through. The fan further has blades surrounding the rotary axle. The hole has a flange formed on an interior side thereof and engaged with the groove. The connecting unit has a space therein such that the fan can be placed in the space.