Parallel Cylindrical Liquid Heater Layout for Low Head Loss
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Solution Overview
Problem
Conventional electrical heating devices for motor vehicles are bulky, heavy, and have high head loss and heating inertia, making them unsuitable for rapid and effective heating of the passenger compartment, especially in cold environments, and their performance is inconsistent with manufacturer reference values.
Innovation Solution
An electrical liquid heating device comprising two approximately cylindrical modules positioned side by side, with a core and heating means defining a circuit for the liquid, and an expansion control mechanism to manage thermal expansion, reducing space requirements and head loss while minimizing heating inertia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrical heating devices with multiple heating elements in a housing are used, then heating function is provided, but space requirement increases and device becomes heavy
Solution Approach 1:
The heating device is divided into two separate cylindrical modules positioned side by side, each module containing heating elements that can independently heat the liquid. This segmentation reduces the overall space requirement compared to a single large housing while maintaining the heating function.
Solution Approach 2:
The invention transitions from a conventional single-housing arrangement to a side-by-side cylindrical module configuration, utilizing spatial arrangement in a different dimensional configuration to reduce the footprint and space requirement of the heating device.
2Reliability
If conventional electrical heating devices are used, then heating function is provided, but head loss increases
Solution Approach 1:
By segmenting the heating device into two separate cylindrical modules with independent liquid circulation circuits, the invention reduces head loss compared to a single large housing configuration. Each module can be optimized for lower flow resistance while maintaining effective heating.
3Reliability
If conventional electrical heating devices are used, then heating function is provided, but heating inertia increases
Solution Approach 1:
The heating device is segmented into two separate cylindrical modules, each with its own liquid circulation circuit. This segmentation reduces heating inertia by allowing faster thermal response in each smaller module compared to a single large housing, enabling more rapid heating of the liquid.
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 solution provides a compact, efficient heating device with reduced head loss and heating inertia, meeting the constraints set by motor vehicle manufacturers, enabling rapid and effective heating of the passenger compartment.
Implementation Method 1
electrical heating device
Implementation Method 2
expansion control mechanism to manage thermal expansion
Data Source
AI summary
The invention relates to an electrical liquid heating device for a motor vehicle. The heating device comprises at least a first (7a) and a second (7b) heating module for heating the aforementioned liquid, defining at least one circuit (15) for guiding the liquid to be heated. The device is characterized in that the heating modules (7a, 7b) each have a generally cylindrical shape and are arranged side by side substantially in parallel. The invention also relates to a heating and/or air-conditioning unit for a motor vehicle, comprising such a heating device (5).