Hydraulic system
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Solution Overview
Problem
Hydraulic systems require a reduction in the number of electrically actuated switch devices to simplify operations and reduce complexity.
Innovation Solution
Incorporating a mechanical switch device within the hydraulic circuit that is hydraulically coupled to the circulation pump assembly, allowing speed control to activate the switch device through fluid pressure changes, eliminating the need for a separate electric drive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrically actuated switch devices are used in hydraulic systems, then the system can be controlled precisely, but the device complexity and number of electrical connections increase
Solution Approach 1:
The patent replaces electrically actuated switch devices with a mechanically actuated switch device that is driven directly by the fluid flow in the hydraulic circuit. The switch device is actuated by the kinetic energy of the flowing fluid, eliminating the need for separate electrical drives and connections while maintaining control functionality.
Solution Approach 2:
The circulation pump assembly serves multiple functions: it circulates the fluid through the hydraulic circuit and simultaneously actuates the switch device through the fluid's kinetic energy. This multi-functionality reduces the need for separate control mechanisms and simplifies the overall system architecture.
2Reliability
If separate electric drives are added for switch devices, then the switching function is reliable, but the number of electrical connections and system complexity increases
Solution Approach 1:
The patent merges the switching function with the fluid circulation function. The switch device is integrated into the hydraulic circuit and actuated by the same fluid flow that serves the primary circulation purpose, combining multiple functions into a unified system without requiring separate electrical drives.
Solution Approach 2:
The fluid flow in the hydraulic circuit serves dual purposes: it performs the primary circulation function and simultaneously provides the actuating force for the switch device. The system uses its own operational fluid to activate the switching mechanism, eliminating the need for external electrical drives.
3Device complexity
If mechanically actuated switch devices are used without separate drives, then the system complexity is reduced, but the actuation mechanism must be integrated into the hydraulic circuit
Solution Approach 1:
The patent uses hydraulic principles to actuate the switch device. The fluid pressure and flow in the hydraulic circuit directly drive the mechanical switch, utilizing the hydraulic energy already present in the system to perform the switching function without requiring separate actuation mechanisms.
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
This solution reduces the complexity of hydraulic systems by using fluid pressure changes to operate the mechanical switch device, minimizing the need for electrically actuated components and maintaining system operation without compromising normal functioning.
Implementation Method 1
The mechanical switch device is subjected to the pressure of the fluid located in the hydraulic circuit... a force transmission is effected from the circulation pump assembly onto the mechanical switch device via the fluid located in the hydraulic circuit
Data Source
AI summary
A hydraulic system includes a circulation pump assembly (2) provided with a speed controller (4, 26), a hydraulic circuit (A, B) connected to the circulation pump assembly (2) as well as a mechanical switch device (86, 88; 120, 122; 120″, 122″) which is subjected to pressure from a fluid in the hydraulic circuit (A, B) and which can be moved into at least two different switch positions. The mechanical switch device (28; 86, 28; 120, 122) can be moved by the circulation pump assembly (2) by way of a hydraulic coupling via the fluid. The speed controller is configured to initiate a movement of the switch device (86, 88; 120, 122; 120″, 122″) by way of at least one hydraulic force acting thereon and causing a movement of the switch device (86, 88; 120, 122; 120″, 122″), produced via the hydraulic circuit, via a speed adaptation of the circulation pump assembly.