Variable Direction Screw Pump Coolant Circuit
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Solution Overview
Problem
Existing coolant circuits for drive devices are inefficient due to a high number of active components and lack flexibility in temperature control, particularly in managing heat dissipation and supply across different devices within the system.
Innovation Solution
A coolant circuit with two sub-circuits connected via a check valve and screw pumps, allowing for adjustable flow direction and independent operation, enabling efficient temperature control by varying pump speed and flow direction to manage heat exchange between devices without active control elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple active control elements (switching valves, controlled pumps) are used in coolant circuits, then temperature control capability is improved, but device complexity and number of active components increases
Solution Approach 1:
The screw pump is designed to automatically reverse its delivery direction based on the rotational direction of the drive shaft, without requiring active control elements. The pump serves itself by converting the rotational direction control into flow direction control through its inherent mechanical design, eliminating the need for switching valves or controlled pumps.
Solution Approach 2:
The screw pump features a dynamically adjustable delivery direction that can be changed by reversing the rotational direction of the drive shaft. This dynamic capability allows the pump to adapt its flow direction in real-time, providing versatility in temperature control while maintaining a simple mechanical structure without active control elements.
2Adaptability or versatility
If switching valves and controlled pumps are used to manage heat exchange, then temperature control flexibility is improved, but energy efficiency decreases due to more active components
Solution Approach 1:
The pump system uses the rotational direction of the drive shaft to automatically control the delivery direction, eliminating the need for energy-consuming switching valves and controlled pumps. The mechanical design converts rotational motion directly into directional flow control, reducing energy losses associated with active control elements.
Solution Approach 2:
The invention replaces the typical mechanical system with switching valves and controlled pumps with a purely mechanical screw pump design that uses rotational direction to control flow direction. This substitution eliminates the need for complex control mechanisms and reduces energy consumption by using direct mechanical coupling between the drive shaft and pump.
3Speed
If active control elements are used for rapid adjustments, then response time is improved, but device complexity increases
Solution Approach 1:
The screw pump provides rapid response to changes in drive shaft rotational direction, enabling quick adjustments of coolant flow direction without the delay associated with switching valves. The direct mechanical coupling between the drive shaft and pump ensures immediate response when the rotational direction changes, achieving fast response time with minimal components.
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 design reduces the number of active components, enhances cooling capacity, and provides high flexibility and energy efficiency in temperature control, allowing for rapid adjustments to operating conditions without active switching valves.
Implementation Method 1
at least one coolant pump is present in each of the two coolant sub-circuits, which is designed in at least one of the coolant sub-circuits as a fluid pump having variable delivery direction, in particular as a screw pump
Implementation Method 2
which are fluidically connected to one another via at least one connecting valve, in particular a connecting check valve
Data Source
AI summary
A coolant circuit for a drive device. It includes a first coolant sub-circuit and a second coolant sub-circuit, in each of which a device to be temperature-controlled is arranged and which are fluidically connected to one another via at least one connecting valve, wherein at least one coolant pump is provided in each of the two coolant sub-circuits, which is designed in at least one of the coolant sub-circuits as a fluid pump having variable delivery direction. The disclosure furthermore relates to a method for operating a coolant circuit for a drive device.