Variable Pressure-Boosting Circuit for Fluctuating Input Pressure
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Solution Overview
Problem
Existing fluid pressure circuits struggle to maintain optimal pressure increase ratios when input pressure fluctuates, leading to inefficiencies and energy waste due to the need for fixed pressure increase ratios that cannot adapt to varying input pressures.
Innovation Solution
A fluid pressure circuit with a pressure increasing device that includes multiple pressure receiving surfaces and adjustable pressure increase ratios, allowing the circuit to adapt to changing input pressures and maintain efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a pressure increasing device with a high pressure increase ratio is installed to match a state where the input pressure is low, then the discharge pressure can reach the predetermined pressure, but the amount of oil discharged decreases when the input pressure is high
Solution Approach 1:
The pressure increase ratio is made variable rather than fixed. The control unit dynamically adjusts the pressure increase ratio based on the detected input pressure from the hydraulic pump. When input pressure is low, a high pressure increase ratio is applied; when input pressure is high, a low pressure increase ratio is applied. This dynamic adjustment resolves the contradiction between maintaining sufficient discharge pressure and ensuring adequate oil discharge volume.
Solution Approach 2:
The pressure increase ratio parameter is changed according to the input pressure conditions. The control unit selects different pressure increase ratios based on the actual operating conditions detected by the pressure sensor. This parameter change allows the system to optimize both discharge pressure and oil discharge volume for different input pressure scenarios.
2Quantity of substance
If a pressure increasing device with a low pressure increase ratio is installed to match a state where the input pressure is high, then the amount of oil discharged increases, but the pressure cannot increase to a predetermined pressure or higher when the input pressure is low
Solution Approach 1:
The system dynamically adjusts the pressure increase ratio based on real-time detection of input pressure conditions. When the hydraulic pump operates at high pressure, the control unit applies a low pressure increase ratio to maximize oil discharge volume. When the hydraulic pump operates at low pressure, the control unit switches to a high pressure increase ratio to ensure discharge pressure reaches the predetermined level. This dynamic control resolves the contradiction between oil volume and pressure.
Solution Approach 2:
The pressure increase ratio parameter is varied according to input pressure detection. The control unit selects appropriate pressure increase ratios from multiple available ratios based on the actual input pressure conditions detected by the pressure sensor. This parameter adaptation enables the system to achieve both high oil discharge volume and sufficient discharge pressure under different operating conditions.
3Device complexity
If a fixed pressure increase ratio is used, then the device structure is simple, but the desired effect cannot be obtained when the input pressure fluctuates
Solution Approach 1:
The pressure increase ratio is transformed from a fixed parameter to a dynamically adjustable parameter. The control unit continuously monitors the input pressure from the hydraulic pump and automatically adjusts the pressure increase ratio accordingly. This dynamic capability enables the system to adapt to input pressure fluctuations while maintaining optimal performance, resolving the contradiction between structural simplicity and adaptability.
Solution Approach 2:
The pressure increasing device is designed to handle multiple operating conditions through a single multi-functional control system. By incorporating a control unit that can select from multiple pressure increase ratios based on detected input pressure, the device achieves universal applicability across varying operating conditions without requiring multiple separate devices, thus balancing structural simplicity with adaptability.
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 circuit achieves flexible pressure adjustment, ensuring efficient delivery of pressurized fluid regardless of input pressure fluctuations, reducing energy waste and improving responsiveness to operational changes.
Implementation Method 1
According to the so-called Pascal's principle, in the pressure increasing device 505, the area ratio of a pressure receiving area S51 of the large-diameter portion 520 to a pressure receiving area S52 of the small-diameter portion 521 is the pressure increase ratio of an output pressure P52 of an output chamber 505-4 to an input pressure P51 of an input chamber 505-3.
Data Source
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AI summary
There is provided a fluid pressure circuit capable of obtaining a pressure-increased fluid suitable for the situation. A fluid pressure circuit 101 includes a fluid supply device 2 that delivers a primary fluid; and a pressure increasing device 30 configured for increasing a pressure of a secondary fluid in output chambers 30-4 and 30-6 using the primary fluid input from the fluid supply device 2 to an input chamber 30-3, and delivering the secondary fluid to a supply destination 7. The pressure increasing device 30 is configured such that the output chambers 30-4 and 30-6 include a plurality of pressure receiving surfaces 121a and 122a and a pressure increase ratio of the secondary fluid to the primary fluid is changeable.