Sealing assembly for evaporator
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Solution Overview
Problem
Current sealing devices between the rotating shaft and evaporator in cold drink dispensers lack durability and self-compensation for wear, leading to material leakage, mold growth, and safety hazards.
Innovation Solution
A multi-layer sealing assembly comprising an outer sleeve, through sleeve, fixed sleeve, and gasket sleeves with reinforcement strips and tracks, forming a durable and vibration-reducing structure that maintains sealing performance despite wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single seal is used between the rotating shaft and evaporator, then the device complexity is low, but the sealing performance deteriorates due to inability to self-compensate for wear
Solution Approach 1:
The sealing device is divided into multiple independent sealing components: a first seal and a second seal arranged in series along the rotating shaft. Each seal can independently compensate for wear, ensuring that if one seal degrades, the other maintains sealing effectiveness. This segmentation resolves the contradiction by improving reliability through multiple seals while keeping each individual seal structure relatively simple.
Solution Approach 2:
The first seal and second seal are nested within the same sealing chamber, with both seals mounted on the rotating shaft and pressing against the stationary sealing surface. This nested arrangement allows multiple sealing functions to coexist in a compact space, improving sealing performance without proportionally increasing device complexity.
2Reliability
If a single seal is used, then the manufacturing cost is low, but material leakage occurs due to wear over time
Solution Approach 1:
The sealing system uses two separate seal components instead of one, allowing each seal to be manufactured using standard processes while providing enhanced leakage prevention. The segmented design enables modular manufacturing and assembly, reducing the overall manufacturing complexity despite adding a seal component.
Solution Approach 2:
The dual seal arrangement provides a backup sealing mechanism that compensates for wear before material leakage occurs. The first seal provides primary sealing, while the second seal acts as a backup that engages when the first seal shows signs of wear, preventing leakage before it becomes a problem.
3Reliability
If elastic materials are used for self-compensation, then the sealing performance improves through wear compensation, but the structural stability deteriorates due to material deformation
Solution Approach 1:
The seal body is constructed with different materials for different functional regions: an elastic material (such as rubber or polymer) for the sealing contact surface that deforms to compensate for wear, and a rigid material (such as metal or reinforced plastic) for the structural framework that maintains geometric stability. This local differentiation resolves the contradiction by allowing elastic deformation only where needed for sealing while maintaining overall structural rigidity.
Solution Approach 2:
The seal component uses composite construction combining elastic and rigid materials in a single integrated structure. The composite design allows the elastic portion to provide wear compensation through deformation while the rigid portion maintains structural integrity and geometric stability, resolving the contradiction between flexibility and stability.
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
The sealing assembly provides strong sealing performance and structural stability, preventing material leakage and enhancing safety by compensating for wear through elastic materials and reinforcement structures.
Implementation Method 1
The outer sleeve and the inner sleeve are both made of elastic materials such as rubber or nylon. After prolonged use, even when the first contact portion and the second contact portion undergo partial wear, the elastic properties of the outer sleeve and the inner sleeve still allow the first contact portion and the second contact portion to maintain contact with the rotating shaft, compensating for the wear.
Implementation Method 2
The sealing assembly for the evaporator of this application also further strengthens the structural stability between components through the cooperation of the reinforcement strips and reinforcement tracks.
Data Source
AI summary
The application discloses a sealing assembly for an evaporator, relating to the technical field of cold drink dispenser device. The evaporator comprises an evaporator casing and an inner axial tube, with a rotating shaft disposed within the inner axial tube. The front end of the evaporator casing is provided with a front opening where sealing assembly is sleeved over the surface of the rotating shaft; the sealing assembly comprises an outer sleeve in contact with the rotating shaft, a through sleeve embedded around the outer sleeve, and a fixed sleeve disposed on the inner wall of the evaporator casing; the through sleeve passes through the front opening and is embedded in the fixed sleeve. The sealing assembly for the evaporator according to the application has the effects of strong durability and strong sealing performance.