Spiral Coolant Spray Unit for Distant Grinding Zone Cooling
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Solution Overview
Problem
Existing cooling systems for grinding operations face challenges in maintaining cooling capacity when the spray unit is installed at a large distance from the contact zone, particularly due to limitations in pump power, which can lead to inadequate coolant penetration and reduced cooling efficiency.
Innovation Solution
The cooling system incorporates a spiral-shaped flow guide within the spray unit, creating a vortex that increases coolant velocity and enhances atomization, allowing for efficient heat absorption and penetration, even at lower pump power, enabling the spray unit to be installed further away from the contact zone while maintaining cooling effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the spray unit is installed at a larger distance from the contact zone, then the risk of contact with the work piece or grinding device is reduced, but the cooling capacity and coolant penetration ability deteriorate
Solution Approach 1:
The patent changes the flow parameters of the coolant by introducing a spiral rib that generates rotational flow. This transforms the coolant from a simple linear flow to a high-velocity rotational jet, increasing its penetration capability and allowing the spray unit to be positioned farther away while maintaining cooling effectiveness
Solution Approach 2:
The patent utilizes hydraulic principles by creating a high-velocity rotational jet through the spiral rib structure. The rotational flow generates centrifugal forces and maintains jet coherence, enabling the coolant to penetrate the contact zone effectively over longer distances without requiring higher pump pressure
2Speed
If the pump power is increased to increase coolant velocity, then the coolant penetration ability improves, but the energy consumption increases
Solution Approach 1:
The patent introduces dynamic rotational flow instead of static linear flow. The spiral rib converts the incoming coolant into a rotating jet that maintains its velocity and coherence through centrifugal forces, improving penetration without requiring proportionally higher pump power
Solution Approach 2:
The spiral rib creates a curved flow path that generates rotational motion. This curvature transforms the linear momentum into rotational kinetic energy, allowing the coolant to maintain velocity and penetration capability more efficiently, reducing the energy required by the pump
3Reliability
If atomization occurs at a certain distance from the channel outlet, then the cooling capacity increases due to larger surface area, but the distance between spray unit and contact zone must be increased
Solution Approach 1:
The spiral rib performs preliminary action by initiating rotational flow and velocity enhancement within the channel itself. This pre-conditioning of the coolant flow ensures that atomization occurs at the optimal location closer to the contact zone, maintaining both cooling capacity and appropriate positioning
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 achieves increased coolant velocity and enhanced atomization, allowing the coolant to effectively penetrate the contact zone, even at reduced pump power, thereby maintaining cooling efficiency and reducing the risk of the spray unit coming into contact with the work piece or grinding device.
Implementation Method 1
The liquid flowing through a similarly shaped flow guide forms a vortex. The inner layers of the coolant in an eddy have a much higher flow rate than the outer layers.
Implementation Method 2
Atomization provides a larger cooling capacity because the many droplets in the mist have a larger cooling capacity for heat absorption than a compact laminar flow of coolant.
Data Source
AI summary
The present invention relates to a cooling system comprising a spray unit for spraying a coolant. The present invention further relates to a machining device which comprises a cooling system of this type. The spray unit comprises a flow guide which is coupled on one side to a chamber and is coupled on the other side to one or more channels, where the chamber, the flow guide and the plurality of channels form a closed system for spraying from the channels pressurized coolant fed to the chamber, where the flow guide, the plurality of elongated channels and the chamber are manufactured as an integral part.