Sliding block structure and reversing valve

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Solution Overview

Problem

Existing sliding block structures in reversing valves lack sufficient strength, leading to a risk of breakage.

Innovation Solution

A sliding block structure with a flange that wraps around a flanged edge of a supporting inner shell, featuring notches and protrusions, and reinforced with support pins and ribs, enhancing mechanical strength and connection reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a simple sliding block structure is used, then the device complexity is reduced, but the strength and reliability deteriorate

Engineering Contradiction:

Improvesliding block structure complexityVSAvoidsliding block strength

Core Design Contradiction:

Device complexityVSStrength

Solution Approach 1:

The sliding block is constructed as a composite structure with a block body and an integrated flange, combining different functional elements into a unified component that achieves both simplicity and strength

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The flange extends the sliding block structure into a second dimension by wrapping around the flanged edge, creating a multi-dimensional connection that enhances strength without significantly increasing overall complexity

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of manufacture

If the sliding block structure is simplified, then the ease of manufacture is improved, but the connection reliability deteriorates

Engineering Contradiction:

Improvesliding block manufacturing easeVSAvoidconnection reliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The flange is integrally formed with the sliding block body as a unified component, merging two elements into one that can be manufactured as a single piece while providing enhanced connection reliability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The flange is designed with a curved configuration that wraps around the flanged edge, using curvature to distribute stresses and improve connection reliability while maintaining manufacturability

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Strength

If the contact area between flanged edge and flange is enlarged, then the mechanical strength is improved, but the device complexity increases

Engineering Contradiction:

Improvemechanical strengthVSAvoidconnection structure complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The flange wraps around the flanged edge in a curved path, utilizing three-dimensional spatial arrangement to maximize contact area without adding complex multi-component structures

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The curved geometry of the flange and the configuration of notches and protrusions modify the contact parameters between components, increasing effective contact area and mechanical strength through geometric optimization rather than structural complexity

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP4667792A1Sliding block structure and reversing valve

Publication Date: 2025.12.24 ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT CO LTD

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AI summary

A sliding block structure and a reversing valve. The sliding block structure comprises a sliding block body (100) and a supporting inner shell (200). The sliding block body (100) covers the outer surface of the supporting inner shell (200). The sliding block body (100) is provided with a flange (101). The supporting inner shell (200) is provided with a flanged edge. An edge of the flanged edge is provided with a notch (202). The flange (101) wraps the outside of the flanged edge and fills the notch (202). The flange of the sliding block structure wraps the outside of the flanged edge and fills the notch in the edge of the flanged edge, thus improving the connection reliability of the sliding block body and the supporting inner shell.