Spiral Heat Exchanger Layout for Low-Resistance Parallel Airflow
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Solution Overview
Problem
Traditional heat exchangers face issues with large flow resistance, high maintenance frequency, large radial size, and insufficient heat transfer capacity due to single-channel structures, making them unsuitable for gaseous fluid exchange and requiring significant installation space.
Innovation Solution
A spiral heat exchanger design featuring multiple spiral airflow channels with independent inlet and outlet ports on both sides of the heat exchanger, allowing for parallel fluid flow and reducing radial space requirements, while maintaining a large heat transfer area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If traditional heat exchangers use a large area to ensure sufficient heat exchange area, then heat exchange area is improved, but installation space requirement increases and maintenance convenience deteriorates
Solution Approach 1:
The patent employs a spiral curved surface structure instead of traditional flat or straight configurations. The heat exchange elements are arranged in a spiral pattern around a central axis, creating a three-dimensional curved geometry that packs more heat exchange area into a smaller radial footprint, effectively resolving the contradiction between heat exchange area and installation space.
Solution Approach 2:
The invention transitions from a two-dimensional planar heat exchange arrangement to a three-dimensional spiral configuration. By utilizing the radial and axial dimensions simultaneously, the heat exchanger achieves high heat exchange area within a compact volume, eliminating the need for large installation space while maintaining sufficient heat transfer capacity.
2Device complexity
If spiral plate heat exchanger uses a single flow channel structure, then device complexity is reduced, but flow resistance increases and reliability deteriorates
Solution Approach 1:
The patent divides the single flow channel into multiple parallel flow channels by introducing partition plates. These partitions create several independent flow paths for the heat exchange fluids, allowing the system to maintain relatively simple overall structure while achieving multiple channels that reduce flow resistance and improve reliability through redundancy.
3Area of moving object
If multilayer spiral winding structure is used to increase heat transfer efficiency, then heat transfer area is improved, but radial size increases and installation flexibility deteriorates
Solution Approach 1:
The patent arranges multiple heat exchange layers in a nested spiral configuration around a central axis, with each layer positioned at different radial distances. This nesting approach allows multiple heat transfer surfaces to coexist within a limited radial envelope, maximizing heat transfer area without proportionally increasing radial dimensions.
Solution Approach 2:
The invention utilizes the axial dimension to accommodate multiple spiral layers, rather than stacking them purely radially. By extending the spiral structure along the axial direction, the heat exchanger achieves high heat transfer area within a compact radial footprint, improving installation flexibility in space-constrained applications.
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 design minimizes flow resistance, facilitates easy maintenance, and enhances heat transfer efficiency by allowing uniform temperature distribution and reducing installation space, making it suitable for applications requiring uniform exhaust temperature.
Implementation Method 1
a first liquid-passing coiled tape (2) with a spiral liquid channel (201) therein wound around the periphery of core shaft (1)
Implementation Method 2
gas flowing in first spiral airflow channel (3) and liquid flowing in first liquid-passing coiled tape (2) undergo heat exchange
Data Source
AI summary
The present application relates to a spiral heat exchanger and a heat exchange device. The spiral heat exchanger comprises: a core shaft with an axis extending in the left-right direction; a first liquid-passing coiled tape with a spiral liquid flow channel therein wound around the axis of the core shaft at least two circles to form a spiral shape; and seal strips sealed between the sides of two heat conduction thin tapes and the spiral liquid flow channel formed between the seal strips and between the two heat conduction thin tapes, wherein adjacent circles of the first liquid-passing coiled tape is isolated by a certain distance maintained by a duct support to prevent the adjacent circles from sticking to each other to create a blockage in the spiral airflow channel.