Refrigerant Evaporator Interchange Structure for Uniform Flow Distribution
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Solution Overview
Problem
Conventional refrigerant evaporators experience uneven refrigerant distribution and pressure loss, leading to undesirable temperature distribution in the fluid being cooled, due to the limited configuration of communicating portions which results in separation of gas and liquid components.
Innovation Solution
The refrigerant evaporator design includes multiple communicating portions and a shifting communication part with a twisting section to improve refrigerant flow and distribution, reducing pressure loss and component separation by allowing the refrigerant to flow in a swirling manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single communicating portion is used to interchange refrigerant between evaporating portions, then the structure is simple, but pressure loss increases and refrigerant distribution becomes uneven
Solution Approach 1:
The single communicating portion is divided into multiple communicating portions (first communicating portion and second communicating portion). Each communicating portion has multiple communicating holes arranged in the flow direction, allowing refrigerant to flow through multiple parallel paths. This segmentation reduces pressure loss and improves refrigerant distribution uniformity while maintaining reasonable structural complexity.
2Device complexity
If a single communicating portion is used to interchange refrigerant between evaporating portions, then the structure is simple, but refrigerant distribution uniformity deteriorates
Solution Approach 1:
The communicating portion is segmented into multiple communicating holes arranged along the flow direction. This creates multiple flow paths that distribute refrigerant more uniformly across the evaporating portions, preventing concentration in specific areas and improving overall distribution uniformity.
Solution Approach 2:
The communicating holes are strategically arranged at different positions along the flow direction to create localized flow paths. This ensures that refrigerant is distributed to different regions of the evaporating portions according to their specific needs, improving local and overall distribution uniformity.
3Stability of the object's composition
If communicating portions are added to improve refrigerant distribution, then refrigerant distribution improves, but device complexity increases
Solution Approach 1:
Multiple communicating holes are merged into a single communicating portion structure that connects the first and second evaporating portions. This integration allows the system to achieve improved refrigerant distribution through multiple flow paths while maintaining a compact and relatively simple overall structure, avoiding the need for separate complex communication systems.
4Quantity of substance
If the refrigerant flow path is extended to cover more tubes, then more tubes are cooled, but pressure loss increases
Solution Approach 1:
The extended flow path is segmented into multiple communicating holes distributed along the flow direction. This creates multiple shorter parallel flow paths instead of one long sequential path, allowing refrigerant to reach more tubes while keeping the pressure loss in each individual path manageable, thus cooling more tubes without excessive pressure loss.
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 enhances refrigerant distribution and temperature uniformity by reducing pressure loss and component separation, thereby improving the cooling capability of the refrigerant evaporator.
Implementation Method 1
a refrigerant evaporator for cooling fluid to be cooled by evaporating refrigerant by absorbing heat from the fluid to be cooled
Implementation Method 2
evaporating refrigerant by absorbing heat from the fluid to be cooled
Implementation Method 3
an interchange part which is disposed in a communicating portion for flowing the refrigerant from the downstream first evaporating portion to the upstream second evaporating portion and interchanges the refrigerant in the right-and-left direction
Implementation Method 4
functions as a heat exchanger for cooling which cools the fluid to be cooled
Data Source
AI summary
A refrigerant evaporator has an interchange part. The interchange part connects a first collecting part of a second downstream tank part, and a second distribution part of a second upstream tank part. The interchange part connects a second collecting part of a second downstream tank part, and a first distribution part of a second upstream tank part. The interchange part swaps a refrigerant about a width direction of a core. Refrigerant passages relevant to the interchange part are configured to improve refrigerant distribution. Providing a plurality of passages and/or twisting a passage improve distribution.