Scraper blades
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Solution Overview
Problem
Conventional scraper blades for frozen dessert machines are inefficient in reducing ice layer buildup on the freezing cylinder, leading to potential damage and reduced product freezing efficiency.
Innovation Solution
The scraper blade design features a blade body with a cutting edge and biasing projections, such as lever arms, that extend from both ends and include a recessed portion with a mounting hole, allowing for improved biasing against the freezing cylinder's inner diameter, reducing ice buildup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional scraper blades are used without biasing projections, then the device complexity is low, but the productivity is reduced due to inefficient ice layer removal
Solution Approach 1:
The scraper blade incorporates biasing projections (lever arms) that provide dynamic biasing force against the freezing cylinder surface. This dynamic mechanism allows the blade to maintain optimal contact pressure with the ice layer during rotation, significantly improving ice removal efficiency compared to static conventional blades.
Solution Approach 2:
The blade is segmented into distinct functional components: the blade body for cutting, the biasing projections for applying force, and the mounting structure for attachment. This segmentation allows each component to be optimized independently for its specific function while maintaining overall system effectiveness.
2Force
If scraper blades rely only on viscosity and gravity for biasing force, then the device complexity is low, but the force applied to the cutting edge is insufficient leading to ice buildup
Solution Approach 1:
The biasing projections create a dynamic force application system that actively pushes the cutting edge against the freezing cylinder surface. This dynamic biasing mechanism generates sufficient force to overcome ice layer adhesion, unlike passive reliance on viscosity and gravity alone.
Solution Approach 2:
The biasing projections are designed to automatically apply the necessary biasing force during rotation without external control systems. The lever arm geometry and mounting configuration enable the blade to self-regulate its contact force with the cylinder surface throughout the rotation cycle.
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 effectively reduces ice layer buildup, enhancing the efficiency and longevity of the frozen product machine by preventing ice from acting as an insulator and minimizing damage, resulting in cost savings and improved performance.
Implementation Method 1
the scraper blades use the viscosity of the product and gravity to apply a biasing force to force a cutting edge of the scraper blades against the refrigerated surface of the freezing cylinder
Implementation Method 2
the scraper blades use the viscosity of the product and gravity to apply a biasing force to force a cutting edge of the scraper blades against the refrigerated surface of the freezing cylinder
Data Source
AI summary
A scraper blade for a frozen dessert machine includes a blade body extending from a first end to a second end. The blade body includes a cutting edge on a first side of the blade body facing a scraping direction. A biasing projection extends from a second side of the blade body in a direction opposite the scraping direction of the cutting edge. A frozen product machine includes a freezing cylinder defining a longitudinal axis and a rotating beater assembly within the freezing cylinder. The rotating beater assembly includes a beater body and a scraper blade as described above. The scraper blade is operatively connected to the beater body. The biasing projection of the scraper blade biases the cutting edge against an inner diameter surface of the freezing cylinder.