Manometer With Dual Box Springs And Safety Vent
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Solution Overview
Problem
Conventional manometers have complex structures with many components and lack protective means for safe air pressure measurement, failing to accurately measure coarse and fine pressure variations.
Innovation Solution
A manometer design featuring a transparent cylindrical body with a plunger, primary and auxiliary box springs, and a tinted O-ring, along with a safety vent, allowing for precise measurement of air pressure variations and proactive safety against over-pressure through the combination of box springs and the safety vent mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional manometers use electronic sensors or mechanical components like Bourdon tubes and gear trains to measure pressure, then pressure measurement function is achieved, but the structure becomes complicated with too many components
Solution Approach 1:
The pressure measurement function is segmented into two independent spring systems: primary box spring for coarse pressure variation and auxiliary box spring for fine pressure variation. Each spring independently responds to pressure changes through the plunger, eliminating the need for complex mechanical linkages like gear trains while achieving precise measurement through combined reading of both spring responses.
Solution Approach 2:
The invention extracts and removes unnecessary intermediate components from conventional mechanical manometers. By directly connecting the plunger to both primary and auxiliary box springs without requiring pivot pins, levers, or sector gears, the design achieves pressure measurement with minimal components, reducing structural complexity while maintaining measurement capability.
2Device complexity
If conventional manometers lack protective means for air pressure, then the structure remains simple, but there is no safety mechanism to keep air pressure in safe range
Solution Approach 1:
The safety vent is pre-positioned at a calibrated height on the manometer body that corresponds to the maximum safe pressure limit. Before over-pressure conditions occur, the system is already configured with the vent opening at the correct location, ready to immediately release excess pressure when the plunger rises due to increased air pressure, preventing dangerous pressure buildup without requiring complex control systems.
Solution Approach 2:
The manometer system performs its own safety function through the plunger-spring-vent mechanism. When air pressure exceeds the safe limit, the plunger automatically rises, compressing the springs and eventually passing through the safety vent opening, which allows excess air to escape. This self-regulating mechanism provides safety protection without requiring external control systems or additional components.
3Device complexity
If a single spring system is used to measure pressure, then the structure is simple, but it cannot accurately measure both coarse and fine pressure variations
Solution Approach 1:
The measurement function is segmented across two spring systems with different stiffness characteristics. The primary box spring with higher stiffness handles coarse pressure variations, while the auxiliary box spring with lower stiffness captures fine pressure variations. This segmentation allows each spring to be optimized for its specific measurement range, achieving high overall precision without requiring an overly complex single-system solution.
Solution Approach 2:
The invention adds a second dimension to pressure measurement by introducing both coarse and fine measurement scales. The primary box spring corresponds to the coarse scale for major pressure changes, while the auxiliary box spring corresponds to the fine scale for subtle pressure variations. This two-dimensional measurement approach enables accurate capture of pressure variations across all magnitudes simultaneously.
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
Enables accurate measurement of both coarse and fine air pressure variations while ensuring safety by preventing over-inflation through the use of a tinted O-ring and safety vent, enhancing user readability and protecting the device from elastic fatigue.
Implementation Method 1
a primary box spring and an auxiliary box spring. By means of the primary box spring and auxiliary box spring function as overall air pressure reflection in combination of coarse air pressure variation responded by the primary box spring and fine air pressure variation responded by the auxiliary box spring
Implementation Method 2
a plunger with a tinted O-ring sleeved on an annular groove
Implementation Method 3
when the air pressure of input compressed air exceeds the upper safety limit preset for the manometer body, the tinted O-ring sleeved on the annular groove of the plunger will pass the safety vent to let subsequent input compressed air discharge out of the manometer body
Data Source
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AI summary
The present invention provides a manometer. The manometer comprises a manometer body with an indicating scale with graduated markings of pressure units and a safety vent, a plunger with a annular groove and a tinted O-ring a cap mount, a primary box spring and an auxiliary box spring. By means of the tinted O-ring and the indicating scale with graduated markings of pressure units, the manometer innovatively functions as indication of air pressure measured. By means of the primary box spring and auxiliary box spring, the manometer precisely measures overall air pressure in combination of coarse air pressure variation responded by the primary box spring and fine air pressure variation responded by the auxiliary box spring. By means of the safety vent disposed on the peripheral of manometer body and the tinted O-ring on the plunger, the manometer functionally provides a safety proactive means for input compressed air.