Vacuum Tank Pressure Control for Analyzer Suction Stability
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Solution Overview
Problem
Automatic analyzers face instability in varying environmental conditions, particularly high-altitude environments where external atmospheric pressure changes affect vacuum suction performance, leading to reduced suction efficiency and stability.
Innovation Solution
Incorporating a vacuum tank with a hole in communication with the outside to maintain constant pressure difference between the vacuum tank and external atmospheric pressure, and using a control mechanism to adjust the vacuum pump's rotation speed or connecting multiple vacuum pumps in series to ensure consistent suction performance across different altitudes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a vacuum pump is used for vacuum suction of reaction liquid, then suction capability is improved, but suction performance decreases in high-altitude environments due to external atmospheric pressure changes
Solution Approach 1:
The patent changes the operational parameters of the vacuum pump by controlling its rotation speed dynamically. A control mechanism adjusts the rotation speed based on detected suction performance, allowing the vacuum pump to maintain effective operation across different atmospheric pressure conditions including high-altitude environments.
Solution Approach 2:
The patent implements a feedback control system where a detector monitors the actual suction performance and feeds this information back to the control mechanism. The control mechanism then adjusts the vacuum pump's rotation speed accordingly, creating a closed-loop system that maintains stable suction performance despite environmental variations.
2Adaptability or versatility
If pressure adjustment members are installed in multiple suction flow paths to adjust for viscosity differences, then suction adaptability is improved, but device complexity and assembly cost increase
Solution Approach 1:
The patent makes the vacuum pump's rotation speed adjustable to serve multiple suction flow paths with different viscosity requirements. Instead of installing separate pressure adjustment members in each flow path, a single control mechanism adjusts the vacuum pump's speed to adapt to the specific viscosity conditions of each path, reducing overall device complexity.
Solution Approach 2:
The patent uses parameter changes (rotation speed adjustment) of the vacuum pump to achieve adaptability across multiple flow paths. By varying the rotation speed, the same vacuum pump can optimize suction performance for different liquid viscosities without requiring separate adjustment mechanisms for each path.
3Power
If multiple vacuum tanks are provided for vacuum suction, then vacuum capacity is improved, but pressure adjustment capability in response to external environment decreases
Solution Approach 1:
The patent introduces dynamic control of the vacuum pump's rotation speed to enable real-time pressure adjustment in response to external environmental changes. This dynamic adjustment capability allows the vacuum system to adapt to varying atmospheric pressure conditions while maintaining sufficient vacuum capacity through the presence of multiple vacuum tanks.
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
Ensures stable operation of automatic analyzers by maintaining consistent suction performance and preventing decreases in suction capacity due to environmental changes, allowing reliable vacuum suction of reaction liquids regardless of altitude.
Implementation Method 1
a vacuum pump; a vacuum tank connected to the vacuum pump
Implementation Method 2
a hole which is provided in the vacuum tank or the vacuum bin and is in communication with outside
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
When the automatic analyzer is installed in an environment with a high altitude and different external atmospheric pressures, there is a problem that an amount of vacuum suction decreases due to a decrease in suction performance of a vacuum pump and it is difficult to perform vacuum suction of an analyzed reaction liquid. In view of the above, by newly providing a pressure adjustment mechanism 62 within a flow path connecting a vacuum tank 53 to vacuum pump 54, it possible to control the pressure difference between a pressure in the vacuum tank 53 and an external atmospheric pressure where the analyzer is installed to be constant regardless of the installation environment. Additionally, by providing a hole in communication with the outside in the vacuum tank 53 or a vacuum bin 51, it possible to control the pressure difference between the pressure in the vacuum tank 53 and the external atmospheric pressure where the analyzer is installed to be constant regardless of the installation environment.