Integral Oxygen Mixing Channel for Respirator Valve
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Solution Overview
Problem
The existing oxygen mixing valve structures in breathing machines suffer from error accumulation due to machining and assembly errors, leading to inefficiencies in adjusting the oxygen concentration, requiring repeated disassembly and adjustment of components, which complicates the debugging process on the production line.
Innovation Solution
The oxygen mixing channel is redesigned as an integral structure with seal ring grooves on a single part, ensuring precise assembly and adjustment of the adjustable piston, allowing for one-time assembly without dismounting the valve body, and utilizing exhaust holes and steel balls to control the gas mixing ratio, simplifying the debugging process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the seal ring grooves are placed on separate parts (adjustable piston and valve body), then the assembly can be manufactured independently, but error accumulation occurs due to machining and assembly errors, leading to debugging difficulties
Solution Approach 1:
The patent merges the seal ring grooves onto a single adjustable piston component instead of distributing them across separate parts. This integration eliminates the interface between components, thereby eliminating error accumulation from machining and assembly operations. The distance between seal rings is now determined by a single machining process on one component, ensuring higher precision while maintaining ease of manufacture through reduced assembly steps.
2Ease of operation
If the adjustable piston assembly requires repeated dismounting and installing for adjustment, then the oxygen concentration can be adjusted, but the debugging efficiency is reduced and the process becomes complicated
Solution Approach 1:
The patent implements preliminary action by pre-setting the distance between seal rings during the manufacturing process through integrated design. The adjustable piston is pre-configured with the correct spacing, eliminating the need for complex field adjustments. During debugging, only the adjustment rod needs to be modified, not the entire assembly, which dramatically improves productivity while maintaining ease of operation for concentration adjustment.
3Adaptability or versatility
If the distance between seal rings is adjusted by screwing the adjustable piston sleeve in and out, then the oxygen mixing ratio can be changed, but the adjustment process requires multiple steps and disassembly
Solution Approach 1:
The patent applies segmentation by separating the adjustment function into two distinct parts: the seal ring positions are fixed and integrated into the adjustable piston structure, while only the adjustment rod remains movable. This segmentation simplifies the overall device complexity by eliminating the need for disassembling the piston sleeve and adjusting multiple components, while still maintaining the adaptability to change gas mixing ratios through simple adjustment rod modification.
Data Source
Figure 1~2
Figure 3
AI summary
The present invention relates to the field of breathing machine equipment. An integral oxygen mixing channel of an oxygen mixing valve of a breathing machine of the present invention comprises an adjustable piston sleeve (1), an adjustable piston (2) and a valve body (7), the adjustable piston sleeve (1) being connected to one end of the adjustable piston (2) via an internal thread, and then being connected to the valve body (7) via an external thread, wherein the other end of the adjustable piston (2) penetrates through the valve body (7); and both ends of the adjustable piston (2) are coaxially provided with a pair of seal ring grooves (14), respectively, the seal ring grooves (14) are placed with seal rings (3) therein, and an area of the adjustable piston (2) between the two seal rings (3) is designed into a hollow cylindrical shape to form an oxygen mixing channel (12). This structure can ensure a controllability of adjustment of the concentration of the mixed oxygen in terms of a mechanism, greatly simplifying a debugging process of a production line, that is, the debugging may be accomplished by the adjustment at one end, therefore greatly reducing the difficulty in debugging and improving the production efficiency.