Integrated Motor Pump System for Hydraulic Energy Loss Reduction
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Solution Overview
Problem
Traditional hydraulic systems with separate motors and pumps are inefficient due to the need for interfaces, valves, and external sensors, leading to energy loss, increased cost, and complex maintenance.
Innovation Solution
An integrated motor and pump system that eliminates the need for valves by directly driving hydraulic fluid, using a power-on-demand motor that can spin up and down as needed, and incorporating electronic control for precise pressure and flow rate management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional hydraulic systems use separate motors and pumps with valves to control fluid flow, then the system can regulate pressure and flow rate, but energy loss increases and system efficiency decreases
Solution Approach 1:
The patent merges the motor and pump into a single integrated unit, eliminating the need for separate valve components. This integration directly reduces energy loss by removing the interface components (valves) that caused energy dissipation in traditional systems, while maintaining the ability to control fluid flow and pressure through the integrated design.
Solution Approach 2:
The patent extracts and eliminates the valve components from the traditional hydraulic system. By removing these intermediate control components, the system achieves direct drive from the motor to the pump output, thereby eliminating the energy loss that occurred at valve interfaces while preserving flow control capabilities.
2Device complexity
If traditional hydraulic systems use separate motors and pumps, then the system can be designed with modular components, but system complexity increases and maintenance requirements increase
Solution Approach 1:
The patent combines the motor and pump into a single integrated assembly, reducing the total number of separate components. This merging simplifies the overall system architecture, reduces the number of interfaces that can fail, and decreases maintenance requirements by eliminating the need to service multiple independent components and their associated connections.
3Manufacturing precision
If traditional hydraulic systems use valves to control fluid flow, then precise flow rate and pressure control is achieved, but significant energy loss occurs at the valves
Solution Approach 1:
The patent replaces the mechanical valve-based flow control system with an electronically controlled integrated pump system. This substitution eliminates the energy-lossy mechanical valves while achieving precise flow and pressure control through electronic control mechanisms, thereby maintaining manufacturing precision without the associated energy losses.
4Stability of the object's composition
If traditional hydraulic systems operate motors continuously to maintain fluid pressure, then stable pressure is maintained, but energy consumption increases
Solution Approach 1:
The patent implements dynamic control of the integrated motor-pump system, allowing the motor to spin up and down on demand rather than operating continuously. This dynamic operation maintains fluid pressure stability when needed while reducing energy consumption during idle periods, achieving both pressure stability and energy efficiency through adaptive control.
Solution Approach 2:
The patent enables periodic operation of the motor, where it operates only when fluid pressure and flow are required. This periodic action replaces continuous operation, maintaining pressure stability during active periods while significantly reducing overall energy consumption during idle periods through on-demand activation.
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 integrated system enhances efficiency by reducing energy loss, lowering system costs, and simplifying maintenance, while achieving precise control over hydraulic fluid flow and pressure without the need for valves.
Implementation Method 1
The hydraulic fluid can be used to cool the motor and controller by absorbing heat from these components
Implementation Method 2
The low pressure hydraulic fluid can be used to cool the motor and controller
Data Source
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AI summary
Disclosed herein is an integrated pump system in which a motor is directly coupled to a pump, preferably using a modular connection. The integrated pump system may operate in a uni-directional or bi-directional mode. The integrated pump system incorporates an internal cooling channel which directs the returning low pressure hydraulic fluid past the controller and the motor for cooling purposes. The low pressure hydraulic fluid is also directly fed into the coupling between the motor and the pump to provide both cooling and lubrication.