Evaporator
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Solution Overview
Problem
The existing evaporators with cold storage cases and inner fins face challenges in filling cold storage material efficiently due to adherence of fin peaks to the case surfaces, obstructing the flow path and prolonging the filling time.
Innovation Solution
The evaporator design incorporates a filling port with a first flow path extending in the same direction as the cold storage material flow and a second flow path intersecting the first, allowing the material to flow efficiently into the cold storage case, with optional vertical and horizontal paths to facilitate quick filling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If inner fins are arranged inside cold storage cases to shorten heat conduction time, then cold storage and cold discharge performance is improved, but the end parts of the inner fins and peak parts of corrugated shapes adhere to the inside surfaces of the cold storage cases, obstructing the flow path and prolonging filling time
Solution Approach 1:
The invention introduces a multi-dimensional flow path system with a first flow path extending in the same direction as cold storage material flow and a second flow path intersecting the first flow path. This dimensional approach creates three-dimensional flow channels that bypass the adhesive regions of inner fins, allowing material to flow around obstructions rather than through blocked linear paths, thereby reducing filling time while preserving the inner fin structure for heat conduction enhancement
2Reliability
If inner fins are arranged inside cold storage cases, then heat conduction performance is improved, but the flow path for cold storage material cannot be secured and filling time increases
Solution Approach 1:
The invention segments the flow path into multiple independent channels: a first flow path for primary material flow and a second flow path intersecting it. This segmentation allows the cold storage material to flow through multiple separate routes, ensuring that even if some paths are partially blocked by adhered inner fins, other paths remain open for material flow, thus maintaining filling efficiency while preserving the thermal performance benefits of inner fins
3Ease of manufacture
If the cold storage case is designed with a simple structure, then manufacturing is easier, but the filling port and flow path configuration cannot ensure efficient material flow
Solution Approach 1:
The filling port and flow path structure serves multiple functions: it provides a standardized filling interface, creates multi-dimensional flow channels for efficient material distribution, and maintains compatibility with existing cold storage case manufacturing processes. The flow path configuration acts as both a structural element and a flow guidance system, eliminating the need for separate complex flow control mechanisms while achieving efficient filling
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 significantly reduces the time required to fill the cold storage material, improving the filling efficiency while maintaining heat conduction performance by ensuring unobstructed flow paths and minimizing resistance.
Implementation Method 1
stores coldness in the cold storage material by solidification of the cold storage material in the cold storage cases during operation of the air-conditioner compressor
Implementation Method 2
the solid cold storage material melts while discharging cold air into sucked air so as to keep down the changes in temperature of the sucked air
Implementation Method 3
time is taken for heat conduction from the outside wall surfaces of the cold storage cases to the cold storage material at the centers of the insides of the cases
Data Source
AI summary
An evaporator is provided with a refrigerant pipe, a cold storage case which has inner fins mounted therein, and air-side fins. The evaporator is characterized in that the cold storage case is provided with: a filling opening for filling the cold storage case with a cold storage material; a first flow passage connecting to the filling opening and extending in the same direction as the direction of inflow of the cold storage material; and a second flow passage connecting to the first flow passage and extending in the direction intersecting the first flow passage.