Water pipe connection structure and burner

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Solution Overview

Problem

Existing water pipe connection structures for burners are complicated and prone to shaking during assembly, leading to loose mounting and instability.

Innovation Solution

A water pipe connection structure featuring a first connecting head with a rotation stopping portion clamped in a side plate, and a threaded connection between the connecting heads, along with a sealing ring for secure fixation, ensuring firm assembly and sealing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional water pipe connection structure is used, then the connection can be established, but the assembly is complicated and prone to shaking during installation

Engineering Contradiction:
Improveconnection stabilityVSAvoidconnection structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The connection structure is divided into distinct functional components: a connecting body with external threads, a connecting head with internal threads and a rotating stopping portion, and a side plate with a mounting hole. This segmentation allows each component to perform its specific function while simplifying the overall assembly process and reducing complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The rotating stopping portion automatically limits the rotation of the connecting head during assembly, eliminating the need for additional locking mechanisms or complex alignment procedures. The structure itself provides the stopping function through its geometric design, making the assembly process simpler and more reliable.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If a conventional connection method is used, then the pipes can be connected, but shaking occurs during connection which is inconvenient for operation

Engineering Contradiction:
Improveassembly convenienceVSAvoidassembly stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The rotating stopping portion is pre-designed with a specific geometry that matches the mounting hole in the side plate. This preliminary design ensures that when the connecting head is inserted and rotated, the stopping portion automatically engages with the mounting hole to limit rotation, preventing shaking during operation without requiring additional adjustment or complex assembly steps.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If a simple connection structure is used, then the assembly is easy, but loose mounting occurs leading to instability

Engineering Contradiction:
Improvemounting stabilityVSAvoidconnection structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The rotating stopping portion has an asymmetric cross-sectional shape that does not match a circular mounting hole. This asymmetric design prevents the connecting head from rotating freely once installed, as the stopping portion will contact the sides of the mounting hole and limit rotation. This simple asymmetric feature effectively prevents loose mounting without adding complex locking mechanisms.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentEP3795921B1Water pipe connection structure and burner
Publication Date: 2024.01.10 WUHU MIDEA KITCHEN & BATH APPLIANCES MFG CO LTD
  • EP3795921B1 patent drawingFigure 1~2
  • EP3795921B1 patent drawingFigure 3~4
  • EP3795921B1 patent drawingFigure 5~6

AI summary

Provided are a water pipe connection structure (1000, 2000, 3000) and a burner. The water pipe connection structure (1000, 2000, 3000) comprises a first connecting head (100) and a second connecting head (200), wherein the first connecting head (100) is used for connecting a cooling water pipe, and the second connecting head (200) is for connecting a water inlet pipe. The second connecting head (200) is sleeved on the first connecting head (100). The first connecting head (100) is provided with a rotation stopping portion (110), and the rotation preventing portion (110) is clamped in a first side plate (4). The first connecting head (100) is fastened to the first side plate (4) by the rotation stopping portion (110).