Milling system for grinding grain and grinding apparatus that incorporates it
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Solution Overview
Problem
Conventional coffee grinding systems experience increased temperature due to friction, leading to milling disc dilation and poor grinding quality, necessitating complex cooling systems that increase cost and complexity.
Innovation Solution
A milling system with integrated air impeller elements that utilize the discs' rotation to create a cooling airflow, directly cooling the milling discs without additional components, maintaining optimal temperature and grinding quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rotation speed of milling discs is increased to improve productivity, then the grinding efficiency increases, but the temperature of milling discs increases due to friction
Solution Approach 1:
The patent converts the harmful friction heat into a beneficial cooling mechanism by using the rotational motion itself to drive air flow through the milling discs. The centrifugal force generated by rotation creates a pressure difference that draws cooling air through openings in the disc structure, transforming the harmful thermal effect into a driving force for the cooling system.
Solution Approach 2:
The milling disc system performs its own cooling function without external auxiliary systems. The rotation of the discs automatically generates the air flow needed for cooling through the integrated openings and channels in the disc structure, making the system self-regulating and eliminating the need for separate cooling devices.
2Temperature
If auxiliary cooling systems are added to maintain milling disc temperature, then the temperature control improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The cooling function is merged with the existing milling disc structure by integrating openings and air flow channels directly into the disc design. This combines the grinding and cooling functions into a single integrated component, eliminating the need for separate auxiliary cooling systems and reducing overall device complexity.
Solution Approach 2:
The system uses its own operational motion (rotation) to provide the cooling function, eliminating the need for external cooling devices such as fans, pumps, or heat exchangers. The milling discs self-regulate their temperature through the built-in air flow paths that are activated by their own rotation.
3Manufacturing precision
If auxiliary cooling systems are installed to maintain optimal temperature, then the grinding quality improves, but the manufacturing cost increases
Solution Approach 1:
The cooling functionality is combined with the milling disc structure itself through integrated openings and air channels. This merging of functions allows the system to achieve temperature control without additional manufacturing steps for separate cooling components, reducing overall manufacturing cost while maintaining grinding quality.
Solution Approach 2:
The system converts the harmful friction heat into a beneficial driving force for air flow through the disc openings. This approach eliminates the need for expensive external cooling equipment while maintaining optimal operating temperature and grinding quality, thereby reducing manufacturing costs.
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
Maintains milling disc temperature at optimal levels, preventing dilation and ensuring consistent grinding performance without additional equipment, thus improving productivity and reducing costs.
Implementation Method 1
an air impeller element, forming a part coaxial with the disc with ejector blades, having a structure with multiple vanes or blades appreciably radial to said axis of rotation
Implementation Method 2
the rotation of the air impeller element... will create a forced air flow towards the upper part of the system
Implementation Method 3
allowing the passage of air... by action of the vanes... reaching... cooling the set of milling discs
Implementation Method 4
This grain breakage action during the rotation of the milling discs, which is typically performed above 1400 rpm, creates a friction and consequent increase in the milling disc temperature
Implementation Method 5
the portions of coffee grain, as they are broken up and due to centrifugal force displace towards the outer perimeter
Data Source
Figure 1a~2
Figure 3a~4
Figure 5a~6
AI summary
The present invention relates to a milling system for grinding grain that allows avoiding the undesired increase in temperature of the milling discs above the optimum operating values, in its action of grinding grain that is made to pass through these milling discs. The invention has a ventilation system integrated in the grain milling system by means of openings and blades that create a forced circulation of cooling air of the set of milling discs in their operation without the need to incorporate additional elements or systems that are expensive to install.