Guide Frame Reinforcement for Four-Way Reversing Valve Strength
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Solution Overview
Problem
Conventional guide frames for four-way reversing valves in air conditioning systems are prone to deformation or fracture due to increased fluid pressure, leading to switching failures between cooling and heating modes.
Innovation Solution
A guide frame with a reinforcing member, comprising first and second bending members and reinforcing plates, is designed to improve the connecting strength between the guide frame and piston assembly, preventing deformation and cracking through strategic welding and threading for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the guide frame uses a conventional bending member connection, then the device complexity is low, but the strength and reliability deteriorate due to deformation and fracture under fluid pressure
Solution Approach 1:
The patent combines the bending member with reinforcing plates to form an integrated connecting portion. The reinforcing plates are welded to the bending members at multiple positions (outer side and inner side), merging these components into a unified structural unit that enhances overall strength while maintaining a compact design.
Solution Approach 2:
The connecting portion uses a composite structure combining the bending member (providing flexibility for connection) with reinforcing plates (providing structural strength). This composite approach allows the structure to withstand high fluid pressures without deformation or fracture, resolving the contradiction between strength requirements and structural simplicity.
2Reliability
If the guide frame uses a conventional bending member connection, then the manufacturing process is simple, but the reliability deteriorates under increased fluid pressure and use of time
Solution Approach 1:
The reinforcing plates are pre-positioned and welded to the bending members during the manufacturing process, before the guide frame is assembled into the four-way reversing valve. This preliminary reinforcement ensures that the connecting portion is already strengthened against fluid pressure stresses before it enters service, improving reliability without requiring complex post-manufacturing modifications.
Solution Approach 2:
By integrating the reinforcing plates with the bending members through welding, the patent creates a pre-strengthened connecting portion that maintains reliability over time under fluid pressure, while the integrated design does not significantly complicate the manufacturing process.
3Strength
If the bending member is reinforced with multiple welding spots, then the strength improves, but the manufacturing precision requirements increase
Solution Approach 1:
The reinforcing plates are welded to the bending members at specific local positions (outer side and inner side) rather than requiring uniform reinforcement across the entire structure. This localized reinforcement approach concentrates welding efforts at critical stress points, improving connecting strength while reducing overall welding precision requirements compared to a fully reinforced design.
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 reinforced guide frame enhances the service life and working strength of the four-way reversing valve, ensuring reliable operation and broader application prospects by preventing deformation and cracking.
Implementation Method 1
The first reinforcing plate is connected to an outer side of the first bending member by welding, and the second reinforcing plate is connected to an outer side of the second bending member by welding
Data Source
AI summary
A guide frame for a four-way reversing valve includes a frame body. Both ends of the frame body include a connecting portion, respectively. The connecting portion includes a first bending member and a second bending member, and the directions of bending of the first bending member and of the second bending member are opposite. The connecting portion includes a reinforcing member. The reinforcing member includes a first reinforcing plate and a second reinforcing plate. The first reinforcing plate is connected to the inner side of the first bending member by welding and the second reinforcing plate is connected to the inner side of the second bending member by welding. The connection strength of the connecting portion is increased, such that the guide frame is less likely to deform or break.