Direct-heating type heater
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Solution Overview
Problem
Existing direct-heating type heaters suffer from low heat transfer efficiency due to ceramics' low heat dissipation capability and uneven water temperature distribution as water passes through quickly, necessitating additional mixing tanks that increase size and cost.
Innovation Solution
Incorporating a metal elastic device with a helical groove structure on the inner wall of the heater shell to enhance heat transfer and mixing, allowing water to flow around the metal elastic device and through the helical grooves for improved temperature uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If water flows rapidly and directly through the cavity formed by ceramic heating pipes and heater shell, then the structure is simple, but the heat transfer efficiency is low due to ceramics' low heat dissipation capability
Solution Approach 1:
The patent combines ceramic heating pipes with metal elastic devices (such as metal springs or metal wires) to create a composite heating structure. The metal components have superior heat dissipation capability compared to ceramics alone, thereby improving heat transfer efficiency while maintaining the direct-heating structure's simplicity
Solution Approach 2:
The metal elastic devices are selectively installed at specific positions along the ceramic heating pipes where enhanced heat dissipation is needed. This local enhancement approach improves overall heat transfer efficiency without requiring complete replacement of the ceramic structure, balancing simplicity and performance
2Productivity
If water passes through the heater quickly, then the heating process is fast, but the water temperature is not even as water cannot be mixed fully and homogeneously
Solution Approach 1:
The helical groove structure on the inner wall of the heater shell creates a rotational flow pattern for the water. This curved path forces water to spiral through the heating cavity, promoting thorough mixing and homogeneous temperature distribution while maintaining rapid heating
Solution Approach 2:
The metal elastic devices act as intermediaries between the ceramic heating pipes and the water flow. They enhance thermal coupling and promote water circulation patterns that improve temperature uniformity without sacrificing heating speed
3Stability of the object's composition
If a small water mixing tank device is provided on the rear water path to solve uneven water temperature, then the water temperature uniformity is improved, but the overall volume of the heater increases and the cost increases
Solution Approach 1:
The patent merges the mixing function with the existing heating cavity structure by adding helical grooves to the shell inner wall. This eliminates the need for a separate mixing tank, achieving temperature uniformity while maintaining compact dimensions and reducing cost
4Stability of the object's composition
If a small water mixing tank is provided on the rear water path, then water temperature uniformity is improved, but the water temperature increasing rate is relatively low
Solution Approach 1:
The helical groove structure creates a rotational flow that enhances mixing efficiency. Water spirals through the heating zone, achieving both uniform temperature distribution and rapid heating by maximizing thermal exposure time without requiring a separate mixing tank that would slow down the process
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 increases water heating rate and ensures even water temperature without the need for additional mixing tanks, reducing the overall size and cost of the heater.
Implementation Method 1
the thermal energy is directly transferred by the ceramic heating pipes to the flowing water. Since ceramics have a low heat dissipation capability, however, the heat transfer efficiency is low.
Implementation Method 2
the water passes through the heater quickly, the water cannot be mixed fully and homogeneously
Data Source
AI summary
The present application discloses a direct-heating type heater that includes a direct-heating type heater shell, a heating device arranged inside the direct-heating type heater shell, and a direct-heating type heater component, wherein at least one segment of the heating device is installed with a metal elastic device, and the inner wall of the direct-heating type heater shell corresponding to the heating device with no metal elastic device installed is partially or wholly provided with a helical groove structure. Such a heater solves the problem of the prior art that the heat transfer efficiency is low due to the low heat dissipation capability of ceramics, and also solves the problem that water temperature is not even as water passes through the heater quickly and the water cannot be mixed fully and homogeneously.