U-Shaped Shell Pipe Heat Exchanger for Easier Shell Plate Cooling
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Solution Overview
Problem
Conventional heat exchangers with shell pipe portions for cooling shell plates have complex assembly due to a high number of components, which complicates the cooling process and can lead to increased shell plate temperatures and corrosion from drainage accumulation.
Innovation Solution
A heat exchanger design featuring a shell plate with a U-shaped main body portion and a U-shaped shell pipe portion that is easily installed, reducing component count, incorporating recessed areas for secure fitting and drainage paths to prevent accumulation, and a series-parallel cooling pipe configuration to minimize temperature increases and detect scale clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate shell pipe portion is provided on each of the four side plates, then the shell plate can be cooled effectively, but the number of components increases and assembling becomes complicated
Solution Approach 1:
The patent combines the shell pipe portion with the shell plate by forming an integral structure where the shell pipe portion is bent into a U-shape and installed on the inner surface of the main body portion. This merging reduces the number of separate components while maintaining the cooling function, directly resolving the contradiction between effective cooling and component complexity
2Temperature
If a separate shell pipe portion is provided on each of the four side plates, then the shell plate can be cooled effectively, but assembling becomes complicated
Solution Approach 1:
The shell pipe portion is integrated with the shell plate as a unified structure, reducing the number of assembly steps. The U-shaped configuration allows the shell pipe portion to be installed as a single piece on the inner surface of the main body portion, significantly simplifying the assembling process while maintaining effective cooling
3Ease of manufacture
If the shell pipe portion is bent into a U shape along the inner surface of the main body portion, then assemblability is improved, but the cooling coverage may be reduced
Solution Approach 1:
The U-shaped shell pipe portion is strategically positioned along the inner surface of the main body portion to provide cooling at critical locations where heat accumulation is most severe. This localized cooling approach ensures effective temperature control while maintaining the simplified U-shaped configuration that improves assemblability
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 improves assemblability, reduces the risk of corrosion, and effectively cools the shell plate while allowing for efficient detection of scale clogging, maintaining a stable temperature and enhancing production efficiency.
Implementation Method 1
a shell pipe portion (13) bent into a U shape along an inner surface of the main body portion (12b) and installed on the inner surface... for cooling the shell plate
Data Source
AI summary
Provided are a heat exchanger capable of cooling a shell plate and having good assemblability and a hot water apparatus having the same. A primary heat exchanger includes a heat exchanging portion, a shell plate, and a shell pipe portion. The shell plate surrounds the heat exchanging portion. The shell pipe portion is for cooling the shell plate. The shell plate includes a front surface portion and a main body portion. The main body portion is installed on the front surface portion and is formed by bending one sheet of plate into a U shape. The shell pipe portion is bent in a U shape along an inner surface of the main body portion and installed on the inner surface.