Pneumatic Unit Bypass Reservoir for Pressure Booster Reliability
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Solution Overview
Problem
Hydropneumatic pressure boosters in motor vehicle workshops face reliability issues when pneumatic pressure decreases, leading to unreliable operation of hydraulic tools, as they cannot maintain the required hydraulic pressure for tasks like riveting, resulting in incomplete or defective connections.
Innovation Solution
A pneumatic unit with a compressed air inlet, outlet, system line, bypass line, compressed air reservoir, and pressure intensifier, which switches between the system line and bypass line to ensure a stable compressed air supply to the pressure booster, allowing completion of at least one operational step of a hydraulic tool even during pressure failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure booster relies on continuous high pneumatic pressure from the supplying line, then reliable operation is ensured, but the system becomes vulnerable to pressure decreases or failures in the supplying line
Solution Approach 1:
The pneumatic reservoir stores compressed air in advance, creating a buffer that can be activated when supply pressure decreases. This preliminary storage of energy allows the system to maintain operation during pressure failures without requiring continuous high-pressure supply.
Solution Approach 2:
The pneumatic reservoir acts as an intermediary between the supplying pneumatic line and the pressure booster. It decouples the two, allowing the reservoir to absorb pressure variations and provide stable pressure to the booster even when supply pressure fluctuates or fails.
2Reliability
If a pneumatic reservoir is added to store compressed air, then operation during pressure failures is enabled, but the device complexity increases
Solution Approach 1:
The pneumatic reservoir serves multiple functions: it stores compressed air for use during pressure failures, acts as a buffer to smooth pressure fluctuations, and provides a backup air supply. This multi-functionality justifies the added complexity by delivering multiple benefits from a single component.
3Ease of operation
If the second compressed air switch is used to switch between system line and bypass line, then compressed air flow control is improved, but the device complexity increases
Solution Approach 1:
The second compressed air switch is configured to automatically switch between the system line and bypass line based on pressure conditions, eliminating the need for manual intervention. The switch monitors pressure and autonomously directs airflow through the appropriate path, simplifying operation despite the added component.
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 pneumatic unit ensures reliable operation of hydraulic tools by providing sufficient pneumatic pressure through a stored air reservoir, preventing defective connections and ensuring completion of tasks like riveting with the required strength, even during compressed air supply disruptions.
Implementation Method 1
a pressure intensifier disposed in said bypass line between said first compressed air switch and said compressed air reservoir
Implementation Method 2
a compressed air reservoir disposed in said bypass line; wherein said second compressed air switch is configured to switch a compressed air flow between said system line and said bypass line
Data Source
AI summary
A pneumatic unit for a hydropneumatic pressure booster has a system line that leads from a compressed air inlet to a compressed air outlet. A bypass line runs parallel to the system line and it is connected to the system line via first and second compressed air switches. A compressed air reservoir is connected in the bypass line, and a pressure intensifier is connected in the region between the first compressed air switch and the compressed air reservoir. The pneumatic unit makes available to the pressure booster a sufficiently high pneumatic pressure for carrying out at least one operational step of a connected hydraulic tool, even in the case of a pressure decrease or pressure failure in the supplying pneumatic line. For that purpose, the second compressed air switch is configured for switching the compressed air flow between the system line and the bypass line.