Valve Communication Hole Rectification for Lower Pressure Loss
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Solution Overview
Problem
The linear cutting of block-shaped valve bodies results in pressure loss when forming channels, as the intersections of these channels within the valve main body create bent channels that hinder fluid flow.
Innovation Solution
A valve device with a rectification member placed in the bent portions of communication holes, featuring a corner portion with an inner circumferential surface bent or curved at an angle larger than the bent portion, reducing fluid turbulence and pressure loss by guiding fluid flow through a smooth passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If linear cutting is used to form channels in the valve main body, then the manufacturing process is simple, but pressure loss occurs due to bent channels at channel intersections
Solution Approach 1:
A rectification member is introduced as an intermediary component within the communication hole to smooth the bent channel section. This member has a corner portion with an inner circumferential surface that is bent or curved at a larger angle than the bent portion of the communication hole, creating a smoother transition for fluid flow and reducing turbulence and pressure loss while maintaining the linear cutting manufacturing method
Solution Approach 2:
The rectification member is specifically positioned only in the bent portion of the communication hole where the center line bends, rather than throughout the entire channel. The corner portion's inner circumferential surface is designed with a specific curvature radius larger than the bent portion's radius, providing localized flow smoothing exactly where needed to address the pressure loss issue
Data Source
AI summary
A valve device capable of reducing pressure loss is provided. The valve device is provided with a valve main body having a valve chamber in which a valve body is arranged, inflow outlets, and communication holes communicating the valve chamber and the inflow outlets, and a rectification member arranged in the communication hole. The communication hole has a bent portion where the center line of the communication hole is bent, and the rectification member is arranged in the bent portion and has a corner portion formed by an inner circumferential surface bent or curved at an angle larger than the angle of the bent portion.