Pressure Detection Device with Removable Flow Passage Unit
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Solution Overview
Problem
Conventional pressure detection devices experience variations in pressure detection characteristics due to individual differences in flow passage units and variations in mounting work, leading to inconsistent pressure readings.
Innovation Solution
A pressure detection device with a pressure detection unit, a flow passage unit, and a mounting unit, where the flow passage unit is removably mounted, featuring a pressure transmitting member at the center of the pressure detecting diaphragm to ensure consistent contact and minimize variations in pressure detection, and distortion resistor units arranged to prevent accuracy reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the entire region of the pressure transmitting surface is in direct contact with the pressure detecting surface, then the contact area is maximized, but individual differences in flow passage unit shape and mounting work variations cause unbalance in contact force and variation in pressure detection characteristics
Solution Approach 1:
The patent concentrates the pressure transmission function to a specific location by providing a pressure transmitting member at the center of the pressure detecting surface. Instead of relying on uniform contact across the entire surface, the design ensures that pressure is transmitted through a dedicated member at a defined position, making the contact quality local rather than distributed. This resolves the contradiction by ensuring consistent pressure transmission regardless of variations in overall contact area or mounting precision.
2Productivity
If the flow passage unit is removably mounted for easy replacement, then productivity and safety are improved, but individual differences in flow passage unit shape and mounting work variations cause variation in pressure detection characteristics
Solution Approach 1:
The pressure transmitting member is designed to automatically ensure proper contact and pressure transmission when the flow passage unit is mounted. The member's structure allows it to self-adjust or self-align to maintain consistent contact force and position, eliminating the need for precise manual adjustment during replacement. This enables quick replacement while maintaining consistent pressure detection characteristics across different units and mounting operations.
3Measurement precision
If a pressure transmitting member is provided at the center of the pressure detecting diaphragm, then pressure transmission is concentrated and consistent, but the structure becomes more complex
Solution Approach 1:
The pressure transmitting member serves multiple functions simultaneously: it transmits pressure from the flow passage unit to the pressure detecting diaphragm, provides a reference position for contact, and ensures uniform force distribution. By combining these functions into a single component, the design achieves consistent pressure transmission without proportionally increasing structural complexity. The member integrates several roles that would otherwise require separate elements.
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 enables reliable and consistent pressure detection by ensuring full contact between the pressure transmitting and detecting surfaces, reducing variations and improving safety by allowing for quick replacement of flow passage units without the need for extensive cleaning, thus maintaining accurate pressure readings.
Implementation Method 1
a pressure detecting diaphragm configured to be displaced in accordance with a pressure transmitted from the flow passage unit
Implementation Method 2
a displacement of the flow passage diaphragm in contact with the top surface is transmitted to the pressure detecting diaphragm via the pressure transmitting member
Data Source
AI summary
Provided is a pressure detection device that can suppress variation in the pressure detection characteristics of a pressure detection unit from occurring due to individual differences in the shape of flow passage units, variation in work in mounting the flow passage unit on the pressure detection unit, or the like. The pressure detection device including: a pressure detection unit; a flow passage unit; and a mounting unit configured to removably mount the flow passage unit on the pressure detection unit. The pressure detection unit has a pressure detecting diaphragm and a sensor rod arranged at the center part of a first surface of the pressure detecting diaphragm. The flow passage unit has a flow passage diaphragm, and a displacement of the flow passage diaphragm in contact with the top surface is transmitted to the pressure detecting diaphragm via the sensor rod.