Spot Cooling Airflow Control Without Electricity
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Solution Overview
Problem
Conventional spot cooling devices require electricity for automatic temperature control, making them unsuitable for environments where electricity is not available or should be minimized, and they suffer from low efficiency in separating compressed air into cold and hot air, leading to inefficient temperature maintenance.
Innovation Solution
A low-vibration and low-noise spot cooling device with an analog automatic temperature control unit that uses a temperature-sensitive expansion member to adjust the opening degree of the passage part, allowing for non-electrical operation and efficient separation of compressed air into cold and hot air, featuring a vibration-proof member and an opening/closing mechanism with minimized friction for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an automatic temperature control unit requiring electricity is used, then temperature control automation is improved, but usability in environments without electricity is worsened
Solution Approach 1:
The temperature control unit operates autonomously using the thermal expansion and contraction of the expansion member in response to temperature changes, without requiring external power sources. The system self-regulates compressed air flow based on temperature feedback, eliminating the need for electrical power while maintaining automatic control functionality.
2Productivity
If a rotating chamber with rotation induction member is used for air separation, then air separation function is provided, but separation efficiency is worsened
Solution Approach 1:
The invention extracts and eliminates the complex rotating chamber and rotation induction member from the air separation process. Instead, it uses a simplified structure where compressed air is directly separated into cold and hot streams through a dedicated separation chamber, achieving high separation efficiency without mechanical rotation components.
3Reliability
If the opening/closing member has a large contact area, then sealing performance is improved, but friction and response speed are worsened
Solution Approach 1:
The opening/closing member features a localized small contact area at the tip that interacts with the inclined part, minimizing friction for fast response. The sealing function is achieved through the precise geometric relationship between the opening/closing member and the passage part, rather than relying on large contact areas, thus maintaining both speed and reliability.
4Measurement precision
If the expansion member responds to small temperature changes, then temperature control precision is improved, but sensitivity to friction and instability are worsened
Solution Approach 1:
The system dynamically balances temperature sensitivity and operational stability through the mechanical design of the expansion member and opening/closing member interaction. The small contact area reduces frictional resistance, allowing the expansion member to respond smoothly to temperature changes without getting stuck, while the inclined part provides mechanical advantage for precise control.
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 device effectively maintains temperature without electricity, reduces energy consumption, and operates with low noise and vibration, making it suitable for environments where electricity is hazardous or not available, while enhancing the efficiency of cold air delivery and temperature control.
Implementation Method 1
an expansion member inserted into a space formed in a male screw part of the control screw member and expanded and contracted according to temperature
Implementation Method 2
a pressurizing member inserted into the space of the control screw part and pushed and pulled by the expansion member so as to advance and retreat in the space
Implementation Method 3
a return member elastically supporting the opening/closing member
Implementation Method 4
The spot cooling device generates a cold air flow and a hot air flow at the same time, without a mechanical driving unit
Data Source
AI summary
A spot cooling device which separates injected compressed air into hot air and cold air to discharge the hot air and eject the cold air to a space or subject includes: a main body including: an injection port through which compressed air is injected; a cold air nozzle through which cold air separated from the injected compressed air is ejected; and a passage part connected to the cold air nozzle and the injection port; and a temperature control unit installed through the passage part so as to control an opening degree of the passage part according to temperature change.