Frozen Beverage Dispenser With Split Refrigeration Priority
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Solution Overview
Problem
Existing frozen product dispensers face limitations in efficiently freezing and dispensing products, including issues with refrigeration priority, product quality maintenance, and ease of cleaning and maintenance of dispensing mechanisms.
Innovation Solution
The design incorporates a split refrigeration system that prioritizes barrel freezing over hopper cooling, uses a serpentine evaporator coil for efficient cooling, and features a novel dispensing valve that is easy to disassemble and assemble without tools, ensuring efficient operation and product quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single refrigeration system is used for both hopper cooling and barrel freezing, then the system structure is simplified, but the freezing efficiency and product quality deteriorate due to lack of refrigeration priority
Solution Approach 1:
The refrigeration system is segmented into two independent subsystems: a hopper cooling system and a barrel freezing system. Each subsystem has its own evaporator coil and control mechanism, allowing independent operation and priority management. The barrel freezing system can operate independently with higher priority to ensure product quality, while the hopper cooling system operates separately to maintain ingredient temperature.
2Reliability
If traditional dispensing valve design is used, then the valve provides sufficient sealing and control, but maintenance and cleaning become difficult and time-consuming
Solution Approach 1:
The dispensing valve is segmented into multiple removable components including the valve body, valve stem, seal elements, and face plate. These components can be easily disassembled and reassembled without tools, allowing quick cleaning and maintenance while maintaining sealing integrity through precision-machined mating surfaces and replaceable seal elements.
Solution Approach 2:
The valve design incorporates features that enable easy self-service maintenance. The tool-free disassembly mechanism allows operators to quickly remove and clean valve components without specialized equipment or extensive training, reducing downtime and maintenance costs while ensuring proper sealing through standardized components.
3Ease of manufacture
If conventional evaporator coil design is used, then the cooling system is simple to manufacture, but the cooling efficiency and temperature distribution are insufficient
Solution Approach 1:
The evaporator coil uses a serpentine (sinuous) curved path design instead of straight or simple circular configurations. This serpentine pattern maximizes the surface area contact between the evaporator and the hopper/barrel walls, improving heat transfer efficiency and temperature distribution throughout the product while maintaining a relatively simple manufacturing process using bent tubing.
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 approach enhances the efficiency of the freezing process, maintains product quality by prioritizing barrel freezing, and simplifies maintenance with the easy-to-clean dispensing valve, addressing the limitations of existing systems.
Implementation Method 1
uses a serpentine evaporator coil for efficient cooling
Implementation Method 2
prioritizes barrel freezing over hopper cooling
Data Source
AI summary
An improved frozen product dispenser wherein a product is placed into a cooled hopper and the product is then fed from the hopper into a freezing and dispensing chamber where it is frozen and dispensed.