Electric Fluid Heater Coil Layout for Short-Circuit Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electrical fluid heaters face challenges in packaging and routing multiple heater coils in limited space without risk of short-circuiting, and they have insufficient heating capacity due to a single heater coil, necessitating innovative arrangements for increased surface area and insulation.
Innovation Solution
The electrical fluid heater features a housing with a channel that accommodates multiple heater coils spaced at least 3 mm apart, with ceramic insulating sleeves between coils and holding clips, ensuring thermal insulation and maintaining coils away from the channel walls, allowing for a torturous path to increase heating capacity within limited space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple heater coils are packaged in limited space within the channel, then the heating capacity is improved, but the risk of short-circuiting increases and packaging complexity worsens
Solution Approach 1:
The patent introduces ceramic insulating sleeves as intermediary components positioned between adjacent heater coils and between the heater coils and channel walls. These ceramic sleeves act as thermal and electrical insulators, preventing short-circuiting while allowing the coils to be closely spaced to maximize heating capacity within the limited channel space.
Solution Approach 2:
The patent transitions from a single-plane coil arrangement to a multi-dimensional configuration where multiple heater coils are stacked in parallel planes within the channel. This spatial arrangement increases the total heating surface area and capacity while maintaining adequate spacing through the use of insulating sleeves in the third dimension (depth direction).
2Power
If the channel and heater coil follow a torturous path to increase length, then the heating capacity is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent divides the heating function into multiple separate heater coils arranged in parallel planes, each following a simpler routing path. This segmentation avoids the need for a single complex torturous path while achieving equivalent or greater total heating capacity through the combined surface area of multiple coils.
3Power
If multiple heater coils are arranged in limited space, then the heating capacity is improved, but thermal insulation requirements and maintenance complexity increase
Solution Approach 1:
The ceramic insulating sleeves serve as intermediary components that provide thermal insulation between adjacent heater coils and between the coils and channel walls. This thermal insulation prevents heat transfer between coils, allowing each coil to operate independently and improving maintainability since one coil can be serviced without significantly affecting the thermal performance of others.
Solution Approach 2:
By segmenting the heating system into multiple independent coils with insulating barriers between them, the patent enables modular maintenance where individual coils can be accessed, removed, or replaced without dismantling the entire heating assembly, thus reducing maintenance complexity.
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 configuration enhances the heating capacity, maintains thermal insulation, and extends the service life and reduces maintenance needs compared to conventional heaters, while preventing short-circuiting and optimizing packaging and routing in confined spaces.
Implementation Method 1
One end of the heater coil 6 acts as positive terminal whereas other end of the heater coil 6 acts as negative terminal to cause current to flow through the heater coil 6 for heating of the heater coil 6
Implementation Method 2
The housing 2 further includes sleeves 40 of insulating material disposed between the heater coil 20 and the corresponding holding clips 30
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
An electrical fluid heater (100) includes a housing (10), heater coils (20), an inlet nozzle (12) and an outlet nozzle (14). The housing (10) is formed with a channel (10a). The heater coils (20) is received within the channel (10a) in spaced apart relation with respect to each other and with respect to inner walls (10b) of the channel (10a). The inlet nozzle (12) is for ingress of fluid inside the housing (10) surrounding the heater coils (20). The outlet (14) is for egress of heated fluid from the housing (10). The heater coils (20) include respective main portions arranged along respective parallel, planes and adjacent to each other with spacing between adjacent heater coils (20) being at least 3 mm.